Motorola MVME2400 Series Manuel de service Page 67
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Block Diagram
http://www.mcg.mot.com/literature 3-19
3
Flash Memory
The MVME240x base board contains two banks of FLASH memory. Bank
B consists of two 32-pin devices which can be populated with 1MB of
FLASH memory. Only 8-bit writes are supported for this bank. Bank A has
four 16-bit Smart Voltage FLASH SMT devices. With the 16Mbit FLASH
devices, the FLASH size is 8MB. A jumper header associated with the first
set of eight FLASH devices provides a total of 128 KB of hardware-
protected boot block. Only 32-bit writes are supported for this bank of
FLASH. There will be a jumper to tell the Hawk chip where to fetch the
reset vector. When the jumper is installed, the Hawk chip maps
0xFFF00100 to these sockets (Bank B).
The onboard monitor/debugger, PPCBug, resides in the Flash chips.
PPCBug provides functionality for:
❏ Booting the system
❏ Initializing after a reset
❏ Displaying and modifying configuration variables
❏ Running self-tests and diagnostics
❏ Updating firmware ROM
Under normal operation, the Flash devices are in “read-only” mode, their
contents are pre-defined, and they are protected against inadvertent writes
due to loss of power conditions. However, for programming purposes,
programming voltage is always supplied to the devices and the Flash
contents may be modified by executing the proper program command
sequence. Refer to the PFLASH command in the PPCbug Debugging
Package User’s Manual for further device-specific information on
modifying Flash contents.
ROM/Flash Performance
The SMC provides the interface for two blocks of ROM/Flash. Access
times to ROM/Flash are programmable for each block. Access times are
also affected by block width. The following tables in this subsection show
access times for ROM/Flash when configured for different device access
times.
- MVME2400-Series 1
- Single Board Computer 1
- Installation and Use 1
- Restricted Rights Legend 2
- Document Terminology 4
- Safety Summary 5
- Safety Depends On You 5
- Contents 9
- Glossary 12
- List of Figures 13
- List of Tables 15
- 1Preparing and Installing the 17
- MVME2400-Series Module 17
- MVME240x Module 18
- PMCspan Expansion Mezzanine 19
- PCI Mezzanine Cards (PMCs) 19
- VMEsystem Enclosure 20
- System Console Terminal 20
- 1 2 3 4 5 6 7 8 25
- ESD Precautions 29
- 2064 9708 31
- Primary PMCspan 32
- 2081 9708 33
- Secondary PMCspan 34
- 2065 9708 35
- INTERRUPT ACKNOWLEDGE 38
- DEBUG port on 38
- Installation Considerations 39
- 2Operating Instructions 41
- Switches 42
- MVME240x 43
- Status Indicators 44
- 10/100 BASET Port 44
- DEBUG Port 45
- Operating Instructions 46
- PMC Slots 47
- 3Functional Description 49
- (RST) and Abort (ABT) 50
- General Description 52
- Block Diagram 52
- (PHB) ASIC 55
- PCI Bus Latency 56
- 3:1 clock ratio: 56
- PPC Bus Latency 58
- Assumptions 60
- SDRAM Memory 62
- Functional Description 66
- Flash Memory 67
- Ethernet Interface 70
- VMEbus Interface 73
- Asynchronous Debug Port 73
- PCI Host Bridge (PHB) 75
- Interrupt Controller (MPIC) 76
- Programmable Timers 76
- 4Programming the MVME240x 79
- Processor Bus Memory Map 80
- PCI Local Bus Memory Map 81
- VMEbus Memory Map 81
- Programming Considerations 82
- Interrupt Handling 84
- DMA Channels 86
- Sources of Reset 86
- Endian Issues 88
- Programming the MVME240x 90
- PPCBug Overview 91
- PPCBug Basics 91
- Diag> 92
- Memory Requirements 93
- PPCBug Implementation 93
- Debugger Commands 96
- Table 5-1. Debugger Commands 97
- Diagnostic Tests 100
- Using PPCBug 101
- 6Modifying the Environment 103
- Modifying the Environment 104
- ENV - Set Environment 105
- ∗ signal after 107
- ∗ signal during board 107
- 00001000? 111
- (Default) 112
- Ordering Related 119
- Documentation 119
- Manufacturers’ Documents 120
- Document Title and Source 121
- Publication 121
- Related Specifications 123
- Specifications 127
- Table B-1. MVME240 128
- Specifications (Continued) 128
- Cooling Requirements 129
- EMC Regulatory Compliance 130
- CConnector Pin Assignments 131
- VMEbus Connector - P1 132
- Connector Pin Assignments 133
- VMEbus Connector - P2 134
- Pin Assignments 136
- CPU Debug Connector - J1 137
- PCI Expansion Connector - J6 142
- DTroubleshooting the MVME240x 151
- Solving Startup Problems 152
- Troubleshooting the MVME240x 153
- Numerics 169
- Single Board Computer 177
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