Motorola T1/E1 Spécifications

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1 of 122
REV: 121707
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata
.
GENERAL DESCRIPTION
The DS26503 is a building-integrated timing-
supply (BITS) clock-recovery element. It also
functions as a basic T1/E1 transceiver. The
receiver portion can recover a clock from T1,
E1, and 6312kHz synchronization timing
interfaces. In T1 and E1 modes, the
Synchronization Status Message (SSM) can also
be recovered. The transmit portion can directly
interface to T1 or E1 interfaces as well as source
the SSM in T1 and E1 modes. The DS26503 can
translate between any of the supported inbound
synchronization clock rates to any supported
outbound rate. A separate output is provided to
source a 6312kHz clock. The device is
controlled through a parallel, serial, or hardware
controller port.
APPLICATIONS
BITS Timing
Rate Conversion
Basic Transceiver
ORDERING INFORMATION
PART TEMP RANGE PIN-PACKAGE
DS26503L 0°C to +70°C 64 LQFP
DS26503LN -40°C to +85°C 64 LQFP
FEATURES
G.703 2048kHz Synchronization Interface
Compliant
G.703 6312kHz Japanese Synchronization
Interface Compliant
Interfaces to Standard T1/J1 (1.544MHz) and
E1 (2.048MHz)
Interface to CMI-Coded T1/J1 and E1
Short- and Long-Haul Line Interface
Transmit and Receive T1 and E1 SSM
Messages with Message Validation
T1/E1 Jitter Attenuator with Bypass Mode
Fully Independent Transmit and Receive
Functionality
Internal Software-Selectable Receive- and
Transmit-Side Termination for
75Ω/100Ω/110Ω/120Ω
Monitor Mode for Bridging Applications
Accepts 16.384MHz, 12.8MHz, 8.192MHz,
4.096MHz, 2.048MHz, or 1.544MHz Master
Clock
8-Bit Parallel Control Port, Multiplexed or
Nonmultiplexed, Intel or Motorola
Serial (SPI) Control Port
Hardware Control Mode
Provides LOS, AIS, and LOF Indications
Through Hardware Output Pins
Fast Transmitter-Output Disable Through
Device Pin for Protection Switching
IEEE 1149.1 JTAG Boundary Scan
3.3V Supply with 5V-Tolerant Inputs and
Outputs
DS26503
T1/E1/J1 BITS Element
www.maxim-ic.com
DESIGN KIT AVAILABLE
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Résumé du contenu

Page 1 - T1/E1/J1 BITS Element

1 of 122 REV: 121707 Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple

Page 2 - TABLE OF CONTENTS

DS26503 T1/E1/J1 BITS Element 10 of 122 Table 2-2. E1-Related Telecommunications Specifications ITUT G.703 Physical/Electrical Characteristics of G.

Page 3 - 3 of 122

DS26503 T1/E1/J1 BITS Element Figure 16-2. TAP Controller State Diagram 1001111111111110000010000110000SelectDR-ScanCapture DRShi

Page 4 - 4 of 122

DS26503 T1/E1/J1 BITS Element INSTRUCTION INSTRUCTION CODES 16.1 Instruction Register The instruction register contains a shift register as well as

Page 5 - LIST OF FIGURES

DS26503 T1/E1/J1 BITS Element Table 16-2IDCODE When the IDCODE instruction is latched into the parallel instruction register, the identification test

Page 6 - LIST OF TABLES

DS26503 T1/E1/J1 BITS Element Table 16-4. Boundary Scan Control Bits CELL # NAME TYPE CONTROL CELL 0 AD1 Output3 1 1 AD1_7_CTRL Controlr 2 AD0 Ou

Page 7 - 1.2 Line Interface

DS26503 T1/E1/J1 BITS Element CELL # NAME TYPE CONTROL CELL 29 TNEGO observe_only TCLKO observe_only 31 TCLK observe_only 32 ALE_A7 observe_only

Page 8 - 1.6 Control Port

DS26503 T1/E1/J1 BITS Element Figure 17-1. SPI Serial Port Access, Read Mode, CPOL = 0, CPHA = 0 17. FUNCTIONAL TIMING DIAGRAMS 17.1 Processor Inter

Page 9 - 2. SPECIFICATIONS COMPLIANCE

DS26503 T1/E1/J1 BITS Element Figure 17-4. SPI Serial Port Access, Read Mode, CPOL = 1, CPHA = 1 SCK CS 1 A7 0 0 0 0 0 0 D7 D6 D5 D4

Page 10 - 10 of 122

DS26503 T1/E1/J1 BITS Element Figure 17-7. SPI Serial Port Access, Write Mode, CPOL = 0, CPHA = 1 0 0 LSB MSB MOSI MISO D7 D6 D5 D4 D3 D2 D

Page 11 - Figure 3-1. Block Diagram

DS26503 T1/E1/J1 BITS Element 108 of 122 18. OPERATING PARAMETERS ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………………………

Page 12 - 12 of 122

DS26503 T1/E1/J1 BITS Element 109 of 122 Table 18-5. DC Characteristics (VDD = 3.3V ±5%, TA = 0°C to +70°C for DS26503L; VDD = 3.3V ±5%, TA = -40°C

Page 13

DS26503 T1/E1/J1 BITS Element 11 of 122 3. BLOCK DIAGRAMS Figure 3-1. Block Diagram RX LIURX LIUT1/E1 SSM FRAMERCLOCK- DATATX LIUT1/E1 SSMFORMATTE

Page 14 - 4.2 Transmit Side

DS26503 T1/E1/J1 BITS Element (VDD = 3.3V ±5%, TA = 0°C to +70°C for DS26503L; VDD = 3.3V ±5%, TA = -40°C to +85°C for DS26503LN.) (Note 1, Figure 19

Page 15 - 4.3 Receive Side

DS26503 T1/E1/J1 BITS Element Figure 19-1. Intel Bus Read Timing (BTS = 0 / BIS[1:0] = 00) ASHPWtCYCtASDtASDPWPWEHELttttttAHLCHCSASLASEDCSAD0

Page 16 - 4.4 Controller Interface

DS26503 T1/E1/J1 BITS Element 112 of 122 Figure 19-3. Motorola Bus Timing (BTS = 1 / BIS[1:0] = 00) t ASD ASHPW t t ASL AHLtCSt ASL ttt DSWDHW t CH

Page 17 - 17 of 122

DS26503 T1/E1/J1 BITS Element 113 of 122 19.2 Nonmultiplexed Bus Table 19-2. AC Characteristics, Non-Mux Parallel Port (VDD = 3.3V ±5%, TA = 0°C to

Page 18 - 18 of 122

DS26503 T1/E1/J1 BITS Element Figure 19-4. Intel Bus Read Timing (BTS = 0 / BIS[1:0] = 01) Address Valid Data Valid A0 to A7 D0 to D7

Page 19 - 19 of 122

DS26503 T1/E1/J1 BITS Element Figure 19-6. Motorola Bus Read Timing (BTS = 1 / BIS[1:0] = 01) Address Valid Data Valid A0 to A7 D0 to

Page 20 - 20 of 122

DS26503 T1/E1/J1 BITS Element Figure 19-819.3 Serial Bus Table 19-3. AC Characteristics, Serial Bus (VDD = 3.3V ±5%, TA = 0°C to +70°C for DS26503L

Page 21 - 4.6 Line Interface

DS26503 T1/E1/J1 BITS Element Figure 19-8. SPI Interface Timing Diagram, CPHA = 0, BIS[1:0] = 10 MSB LSBBITS 6-1SLAVE MSB SLAVE LSBBITS

Page 22 - 4.7 Power

DS26503 T1/E1/J1 BITS Element Table 19-4. Receive Side AC Characteristics Figure 19-1019.4 Receive Side AC Characteristics (VDD = 3.3V ±5%, TA = 0°

Page 23 - Table 5-1. LQFP Pinout

DS26503 T1/E1/J1 BITS Element Figure 19-1119.5 Transmit Side AC Characteristics Table 19-5. Transmit Side AC Characteristics (VDD = 3.3V ±5%, TA =

Page 24

DS26503 T1/E1/J1 BITS Element 12 of 122 Figure 3-2. Loopback Mux Diagram (T1/E1 Modes Only) FROM RXLIUTO TXLIUCLOCK+ DATA- D

Page 25

DS26503 T1/E1/J1 BITS Element Figure 19-11. Transmit Timing, T1/E1 TSERTS_8K_41tD2tHDtSUTS_8K_42tSUtFtRTCLKttCLtCHCPTX CLOCK3PLL_OUTtD3RCLK, JA CLO

Page 26 - 6.2 Internal Termination

DS26503 T1/E1/J1 BITS Element 121 of 122 20. REVISION HISTORY REVISION DESCRIPTION 070904 New product release. 032405 Updated Table 2-1 and Table 2

Page 27 - Table 6-4. T1 Line Build-Out

DS26503 T1/E1/J1 BITS Element 122 of 122 Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entir

Page 28 - 6.6 MCLK Pre-Scaler

DS26503 T1/E1/J1 BITS Element 13 of 122 Figure 3-4. Master Clock PLL Diagram

Page 29 - 29 of 122

DS26503 T1/E1/J1 BITS Element 14 of 122 4. PIN FUNCTION DESCRIPTION 4.1 Transmit PLL NAME TYPE FUNCTION PLL_OUT O Transmit PLL Output. This pin c

Page 30 - Table 7-1. Port Mode Select

DS26503 T1/E1/J1 BITS Element 15 of 122 4.3 Receive Side NAME TYPE FUNCTION RCLK O Receive Clock. Recovered 1.544MHz (T1), 2.048MHz (E1), or 6312kH

Page 31 - 7.2.6 Register Reads

DS26503 T1/E1/J1 BITS Element 16 of 122 4.4 Controller Interface NAME TYPE FUNCTION INT/ JACKS0 I/O Active-Low Interrupt/Jitter Attenuator Clock S

Page 32 - 7.3 Register Map

DS26503 T1/E1/J1 BITS Element 17 of 122 NAME TYPE FUNCTION AD[5]/ RMODE1 I/O Data Bus D[5] or Address/Data Bus AD[5]/Receive Framing Mode Select Bi

Page 33 - 33 of 122

DS26503 T1/E1/J1 BITS Element 18 of 122 NAME TYPE FUNCTION AD[1]/ RMODE3/ MOSI I/O Data Bus D[1] or Address/Data Bus AD[1]/Receive Mode Select 3/Ma

Page 34

DS26503 T1/E1/J1 BITS Element 19 of 122 NAME TYPE FUNCTION A4/CPHA/ L2 I Address Bus Bit A[4]/Serial Port Clock Phase Select/Line Build-Out Select

Page 35

DS26503 T1/E1/J1 BITS Element TABLE OF CONTENTS 1. FEATURES ...

Page 36

DS26503 T1/E1/J1 BITS Element 20 of 122 NAME TYPE FUNCTION BTS/HBE I Bus Type Select/Transmit and Receive B8ZS/HDB3 Enable BTS: Strap high to selec

Page 37

DS26503 T1/E1/J1 BITS Element 21 of 122 4.5 JTAG NAME TYPE FUNCTION JTCLK I JTAG Clock. This clock input is typically a low frequency (less than 10

Page 38 - 7.5 Status Registers

DS26503 T1/E1/J1 BITS Element 22 of 122 4.7 Power NAME TYPE FUNCTION DVDD — Digital Positive Supply. 3.3V ±5%. Should be tied to the RVDD and TVDD

Page 39 - 7.6 Information Registers

DS26503 T1/E1/J1 BITS Element 23 of 122 5. PINOUT Table 5-1. LQFP Pinout MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 1 I/O AD2 SCL

Page 40 - 8.1 T1 Control Registers

DS26503 T1/E1/J1 BITS Element 24 of 122 MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 18 O TCLKO TCLKO TCLKO Transmit Clock Output 1

Page 41

DS26503 T1/E1/J1 BITS Element 25 of 122 MODE PIN TYPE PARALLEL PORT SERIAL PORT HARDWARE FUNCTION 60 I CS CS RLB Parallel Port Mode: Active-Low Chi

Page 42

DS26503 T1/E1/J1 BITS Element 26 of 122 6. HARDWARE CONTROLLER INTERFACE In Hardware Controller mode, the parallel and serial port pins are reconfi

Page 43

DS26503 T1/E1/J1 BITS Element 27 of 122 6.3 Line Build-Out Table 6-3. E1 Line Build-Out L2 PIN 13 L1 PIN 12 L0 PIN 11 APPLICATION N (NOTE 1) RETURN

Page 44

DS26503 T1/E1/J1 BITS Element 28 of 122 6.5 Transmitter Operating Modes Table 6-6.Transmit Path Operating Mode TMODE3 PIN 62 TMODE2 PIN 48 TMODE1 P

Page 45 - Table 8-1. T1 Alarm Criteria

DS26503 T1/E1/J1 BITS Element 29 of 122 Table 6-8. MCLK Pre-Scaler for E1 Mode MPS1 PIN 16 MPS0 PIN 15 JACKS0 PIN 46 MCLK (MHz) 0 0 0 2.048 0 0 1 Re

Page 46 - 9.1 E1 Control Registers

DS26503 T1/E1/J1 BITS Element 3 of 122 9. E1 FRAMER/FORMATTER CONTROL REGISTERS ...46

Page 47

DS26503 T1/E1/J1 BITS Element 30 of 122 7. PROCESSOR INTERFACE The DS26503 is controlled via a nonmultiplexed (BIS[1:0] = 01) or a multiplexed (BIS[

Page 48

DS26503 T1/E1/J1 BITS Element 31 of 122 are terminated when CS is removed. If CS is removed before all 8 bits of the data are read, the remaining da

Page 49 - Table 9-2. E1 Alarm Criteria

DS26503 T1/E1/J1 BITS Element 32 of 122 7.3 Register Map Table 7-2. Register Map Sorted By Address ADDRESS TYPE REGISTER NAME REGISTER ABBREVIATION

Page 50

DS26503 T1/E1/J1 BITS Element 33 of 122 ADDRESS TYPE REGISTER NAME REGISTER ABBREVIATION 44 R/W Transmit Remote Alarm Bits TRA 45 R/W Transmit

Page 51

DS26503 T1/E1/J1 BITS Element 34 of 122 7.3.1 Power-Up Sequence The DS26503 contains an on-chip power-up reset function, which automatically clears

Page 52

DS26503 T1/E1/J1 BITS Element 35 of 122 7.3.3 Mode Configuration Register Register Name: MCREG Register Description: Mode Configuration Register Re

Page 53 - Table 10-1. TS Pin Functions

DS26503 T1/E1/J1 BITS Element 36 of 122 Bits 4 to 7: Transmit Mode Configuration (TMODE[3:0]). Used to select the operating mode of the transmit pat

Page 54

DS26503 T1/E1/J1 BITS Element 37 of 122 Register Name: TPCR Register Description: Transmit PLL Control Register Register Address: 09h Bit # 7 6

Page 55 - 11.2 Transmit BOC

DS26503 T1/E1/J1 BITS Element 38 of 122 7.4 Interrupt Handling Various alarms, conditions, and events in the DS26503 can cause interrupts. For simpl

Page 56 - 11.3 Receive BOC

DS26503 T1/E1/J1 BITS Element 39 of 122 7.6 Information Registers Information registers operate the same as status registers except they cannot caus

Page 57

DS26503 T1/E1/J1 BITS Element 4 of 122 19.2 NONMULTIPLEXED BUS...

Page 58

DS26503 T1/E1/J1 BITS Element 40 of 122 8. T1 FRAMER/FORMATTER CONTROL REGISTERS The T1 framer portion of the DS26503 is configured via a set of fiv

Page 59

DS26503 T1/E1/J1 BITS Element 41 of 122 Register Name: T1RCR2 Register Description: T1 Receive Control Register 2 Register Address: 04h Bit # 7 6

Page 60

DS26503 T1/E1/J1 BITS Element 42 of 122 Register Name: T1TCR1 Register Description: T1 Transmit Control Register 1 Register Address: 05h Bit # 7

Page 61

DS26503 T1/E1/J1 BITS Element 43 of 122 Register Name: T1TCR2 Register Description: T1 Transmit Control Register 2 Register Address: 06h Bit # 7

Page 62

DS26503 T1/E1/J1 BITS Element 44 of 122 Register Name: T1CCR Register Description: T1 Common Control Register Register Address: 07h Bit # 7 6 5

Page 63

DS26503 T1/E1/J1 BITS Element 45 of 122 Table 8-1. T1 Alarm Criteria ALARM SET CRITERIA CLEAR CRITERIA Blue Alarm (AIS) (Note 1) Over a 3ms windo

Page 64 - Table 12-1. E1 SSM Messages

DS26503 T1/E1/J1 BITS Element 46 of 122 9. E1 FRAMER/FORMATTER CONTROL REGISTERS The E1 framer portion of the DS26503 is configured via a set of two

Page 65

DS26503 T1/E1/J1 BITS Element 47 of 122 Table 9-1. E1 Sync/Resync Criteria FRAME OR MULTIFRAME LEVEL SYNC CRITERIA RESYNC CRITERIA ITU SPEC. FAS

Page 66

DS26503 T1/E1/J1 BITS Element 48 of 122 9.2 E1 Information Registers Register Name: INFO2 Register Description: Information Register 2 Register Ad

Page 67

DS26503 T1/E1/J1 BITS Element 49 of 122 Table 9-2. E1 Alarm Criteria ALARM SET CRITERIA CLEAR CRITERIA ITU SPEC. RLOF An RLOF condition exists on

Page 68

DS26503 T1/E1/J1 BITS Element 5 of 122 LIST OF FIGURES Figure 3-1. Block Diagram...

Page 69

DS26503 T1/E1/J1 BITS Element 50 of 122 Register Name: SR2 Register Description: Status Register 2 Register Address: 16h Bit # 7 6 5 4 3 2 1 0 Na

Page 70

DS26503 T1/E1/J1 BITS Element 51 of 122 Register Name: IMR2 Register Description: Interrupt Mask Register 2 Register Address: 17h Bit # 7 6 5 4 3

Page 71

DS26503 T1/E1/J1 BITS Element 52 of 122 10. I/O PIN CONFIGURATION OPTIONS Register Name: IOCR1 Register Description: I/O Configuration Register 1

Page 72

DS26503 T1/E1/J1 BITS Element 53 of 122 Table 10-1. TS Pin Functions TRANSMIT MODE IOCR.3 IOCR.2 IOCR.1 TS FUNCTION T1/E1 0 0 0 Frame sync input T

Page 73

DS26503 T1/E1/J1 BITS Element 54 of 122 Register Name: IOCR2 Register Description: I/O Configuration Register 2 Register Address: 02h Bit # 7 6 5

Page 74

DS26503 T1/E1/J1 BITS Element 11. T1 SYNCHRONIZATION STATUS MESSAGE The DS26503 has a BOC controller to handle SSM services in T1 mode. Table 11-1.

Page 75

DS26503 T1/E1/J1 BITS Element 11.3 Receive BOC The receive BOC function is enabled by setting BOCC.4 = 1. The RFDL register will now operate as the r

Page 76

DS26503 T1/E1/J1 BITS Element Register Name: BOCC Register Description: BOC Control Register Register Address: 1Fh Bit # 7 6 5 4 3 2 1 0 Name — —

Page 77

DS26503 T1/E1/J1 BITS Element Register Name: RFDL (RFDL register bit usage when BOCC.4 = 1) Register Description: Receive FDL Register Register Add

Page 78 - 13.2 LIU Receiver

DS26503 T1/E1/J1 BITS Element Register Name: SR3 Register Description: Status Register 3 Register Address: 18h Bit # 7 6 5 4 3 2 1 0 Name RAI

Page 79 - 13.3 LIU Transmitter

DS26503 T1/E1/J1 BITS Element 6 of 122 LIST OF TABLES Table 2-1. T1-Related Telecommunications Specifications...

Page 80 - 13.5 Jitter Attenuator

DS26503 T1/E1/J1 BITS Element Register Name: IMR3 Register Description: Interrupt Mask Register 3 Register Address: 19h Bit # 7 6 5 4 3 2 1 0 Nam

Page 81 - Figure 13-3. CMI Coding

DS26503 T1/E1/J1 BITS Element Register Name: SR4 Register Description: Status Register 4 Register Address: 1Ah Bit # 7 6 5 4 3 2 1 0 Name — RSA1 R

Page 82 - 13.7 LIU Control Registers

DS26503 T1/E1/J1 BITS Element Register Name: IMR4 Register Description: Interrupt Mask Register 4 Register Address: 1Bh Bit # 7 6 5 4 3 2 1 0 Name

Page 83 - N.M. = not meaningful

DS26503 T1/E1/J1 BITS Element Register Name: TFDL Register Description: Transmit FDL Register Register Address: 51h Bit # 7 6 5 4 3 2 1 0 Name T

Page 84

DS26503 T1/E1/J1 BITS Element 12. E1 SYNCHRONIZATION STATUS MESSAGE The DS26503 provides access to both the transmit and receive Sa/Si bits. In E1,

Page 85

DS26503 T1/E1/J1 BITS Element Register Name: RSiAF Register Description: Receive Si Bits of the Align Frame Register Address: 58h Bit # 7 6 5 4 3

Page 86

DS26503 T1/E1/J1 BITS Element Register Name: RRA Register Description: Receive Remote Alarm Register Address: 5Ah Bit # 7 5 4 3 2 1 0 Name RRAF

Page 87

DS26503 T1/E1/J1 BITS Element Register Name: RSa5 Register Description: Receive Sa5 Bits Register Address: 5Ch Bit # 7 6 5 4 3 2 1 0 Name RSa5F

Page 88

DS26503 T1/E1/J1 BITS Element Register Name: RSa7 Register Description: Receive Sa7 Bits Register Address: 5Eh Bit # 7 6 5 4 3 2 1 0 Name RSa7F

Page 89

DS26503 T1/E1/J1 BITS Element Register Name: TSiAF Register Description: Transmit Si Bits of the Align Frame Register Address: 42h Bit # 7 6 5 4 3

Page 90 - Protection)

DS26503 T1/E1/J1 BITS Element 7 of 122 1. FEATURES 1.1 General  64-pin, 10mm x 10mm LQFP package  3.3V supply with 5V-tolerant inputs and outputs

Page 91

DS26503 T1/E1/J1 BITS Element 2 1 TRAF1 Register Name: TRA Register Description: Transmit Remote Alarm Register Address: 44h Bit # 7 6 5 4 3 0 Na

Page 92 - 92 of 122

DS26503 T1/E1/J1 BITS Element Register Name: TSa5F9 TSa5 Register Description: Transmit Sa5 Bits Register Address: 46h Bit # 7 6 5 4 3 2 1 0 Name

Page 93

DS26503 T1/E1/J1 BITS Element TSa7F3 Register Name: TSa7 Register Description: Transmit Sa7 Bits Register Address: 48h Bit # 7 6 5 4 3 2 1 0 Name

Page 94

DS26503 T1/E1/J1 BITS Element Sa7 Register Name: TSACR Register Description: Transmit Sa Bit Control Register Register Address: 4Ah Bit # 7 6 5 4

Page 95 - 14. LOOPBACK CONFIGURATION

DS26503 T1/E1/J1 BITS Element 3 FAS6 12.2 Alternate Sa/Si Bit Access Based on Double-Frame On the receive side, the RAF and RNAF registers will alwa

Page 96 - 96 of 122

DS26503 T1/E1/J1 BITS Element Register Address: 5 Sa7 Register Name: RNAF Register Description: Receive Non-Align Frame Register 57h Bit # 7 6 4

Page 97 - 10kΩ 10kΩ 10k

DS26503 T1/E1/J1 BITS Element Register Name: TNAF Register Description: Transmit Non-Align Frame Register Register Address: 41h Bit # 7 6 5 4 3 2

Page 98 - 98 of 122

DS26503 T1/E1/J1 BITS Element Figure 13-113. LINE INTERFACE UNIT (LIU) The LIU in the DS26503 contains three sections: the receiver, which handles c

Page 99 - 99 of 122

DS26503 T1/E1/J1 BITS Element Figure 13-413.1 LIU Operation The LIU interfaces the T1, E1, and 6312kHz signals to the various types of network media

Page 100 - 100 of 122

DS26503 T1/E1/J1 BITS Element 13.2.2 Receive G.703 Section 10 Synchronization Signal The DS26503 can receive a 2.048MHz square-wave synchronization

Page 101 - 16.1 Instruction Register

DS26503 T1/E1/J1 BITS Element 8 of 122 1.4 Framer/Formatter  Full receive and transmit path transparency  T1 framing formats include D4 and ESF 

Page 102 - 16.2 Test Registers

DS26503 T1/E1/J1 BITS Element 80 of 122 The transmit line drive has two modes of operation: fixed gain or automatic gain. In the fixed gain mode, t

Page 103 - 103 of 122

DS26503 T1/E1/J1 BITS Element the incoming jitter exceeds either 120 UIP-P (buffer depth is 128 bits) or 28 UIP-P (buffer depth is 32 bits), then the

Page 104 - 104 of 122

DS26503 T1/E1/J1 BITS Element 82 of 122 13.7 LIU Control Registers Register Name: LIC1 Register Description: Line Interface Control 1 Register Add

Page 105 - 17.1.2 SPI Serial Port Mode

DS26503 T1/E1/J1 BITS Element T1 Mode L2 L1 L0 APPLICATION N (NOTE 1) RETURN LOSS Rt (NOTE 1) 0 0 0 DSX-1 (0 to 133 feet)/0dB CSU 1:2 N.M.

Page 106

DS26503 T1/E1/J1 BITS Element Register Address: Bit # Register Name: LIC2 Register Description: Line Interface Control 2 31h 7 6 5 4 3 2 1 0 Name J

Page 107

DS26503 T1/E1/J1 BITS Element Register Name: LIC3 Register Description: Line Interface Control 3 Register Address: 32h Bit # 7 6 5 4 3 2 1 0 Name C

Page 108 - ABSOLUTE MAXIMUM RATINGS

DS26503 T1/E1/J1 BITS Element Bit # Register Name: LIC4 Register Description: Line Interface Control 4 Register Address: 33h 7 6 5 4 3 2 1 0 Name M

Page 109 - 109 of 122

DS26503 T1/E1/J1 BITS Element INFO1 Register Name: Register Description: Information Register 1 Register Address: 11h Bit # 7 6 5 4 3 2 1 0 Name —

Page 110 - 19.1 Multiplexed Bus

DS26503 T1/E1/J1 BITS Element 88 of 122 Register Name: SR1 Register Description: Status Register 1 Register Address: 14h Bit # 7 6 5 4 3 2 1 0 Na

Page 111 - 111 of 122

DS26503 T1/E1/J1 BITS Element Register Name: IMR1 Register Description: Interrupt Mask Register 1 Register Address: 15h Bit # 7 6 5 4 3 2 1 0 Name

Page 112 - 112 of 122

DS26503 T1/E1/J1 BITS Element 9 of 122 2. SPECIFICATIONS COMPLIANCE The DS26503 meets all applicable sections of the latest telecommunications speci

Page 113 - 19.2 Nonmultiplexed Bus

DS26503 T1/E1/J1 BITS Element 90 of 122 13.8 Recommended Circuits Figure 13-4. Software-Selected Termination, Metallic Protection

Page 114 - 5ns min/20ns max

DS26503 T1/E1/J1 BITS Element 91 of 122 Figure 13-5. Software-Selected Termination, Longitudinal Protection Table 13-2.

Page 115

DS26503 T1/E1/J1 BITS Element Figure 13-6. E1 Transmit Pulse Template 0-0.1-0.20.10.20.30.40.50.60.70.80.91.01.11.20TIME (ns)SCAL

Page 116 - 19.3 Serial Bus

DS26503 T1/E1/J1 BITS Element Figure 13-8. Jitter Tolerance (T1 Mode) UNIT INTERVALS (UIpp) FREQUENCY (Hz)1K 100 10 1 0.1 10 100

Page 117 - 117 of 122

DS26503 T1/E1/J1 BITS Element Figure 13-10. Jitter Attenuation (T1 Mode) Figure 13-11. Jitter Attenuation (E1 Mode) FREQUE

Page 118 - 118 of 122

DS26503 T1/E1/J1 BITS Element 14. LOOPBACK CONFIGURATION Register Name: LBCR Register Description: Loopback Control Register Register Address: 20h

Page 119 - 119 of 122

DS26503 T1/E1/J1 BITS Element 96 of 122 15. 6312kHz SYNCHRONIZATION INTERFACE The DS26503 has a 6312kHz Synchronization Interface mode of operation

Page 120

DS26503 T1/E1/J1 BITS Element Details on Boundary Scan Architecture and the Test Access Port can be found in IEEE 1149.1-1990, IEEE 1149.1a-1993, and

Page 121 - 20. REVISION HISTORY

DS26503 T1/E1/J1 BITS Element Figure 16-2TAP Controller State Machine The TAP controller is a finite state machine that responds to the logic level a

Page 122 - 21. PACKAGE INFORMATION

DS26503 T1/E1/J1 BITS Element Select-IR-Scan All test registers retain their previous state. The instruction register will remain unchanged during th

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