Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 11)

MPC562BC 10/31/02

Option Jumper and Selections

JP3 Option Jumpers

• • • BDM = 3.3V

• • • BDM = 2.6V

1 BRK_EN enabled on Switch 1

JP3 Default positions indicated.

BRK_EN Option

The BRK_EN or Break Enable option is provided to allow an IRQ0 NMI interrupt to occur on SW1 being pressed. This feature is

provided to support the dBUG Monitor ABORT operation to stop user code execution and return to the Monitor command prompt.

When the option jumper is installed, depressing SWITCH 1 will cause a low active level to be applied to the MPC562 IRQ0/NMI.

BDM Port Interface Level

JP3 provides the option of 2.6V or 3.3V interface levels on the BDM port. This allows the use of legacy MPC555 BDM tools on the

MPC562. The option is set for 2.6V interface from the factory. See the Applying a BDM Cable section of this manual for other

notes.

CFG 1 – 5: External Reset Configuration Word (RCW) Options

CFG1, 2, 3, 4,and 5 provide the user access to 5 of the external Reset Configuration Word (RCW) bits not normally required for

default MPC562BC operation. The CFG1 option is connected by default to move the Reset and interrupt vector table to the

0xFFF00000 base address for dBUG monitor operation. CFG1 maybe isolated by cutting the trace between the 2 option pin pads on

the top of the board. The CFG2 – 5 options are not connected and defaulted to the 0 level. The user may apply a wire jumper

between the 2 pad positions of each CFG1 – 5 option to provide a logic high level on the respective bit position during external

RCW operation. Following is the option definition table:

CFG OPTION MPC562 RCW Bit Default operation Option operation

CFG1 IP bit /D1 1 = IP at address 0xFFF00000 0 = IP at address 0x00000000

CFG2 BDIS / D3 0 = Memory controller active 1 = Memory controller disabled

CFG3 EN_COMP / D21 0 = Code compression off 1 = Code compression on

CFG4 EXC_COMP / D22 0 = Exception compression off 1 = exception compression on

CFG5 DME / D31 0 = dual mapping off 1 = dual mapping on

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 17

Pas de commentaire

Motorola MPC564EVB Manuel d'utilisateur Page 11