Motorola MPC823e User Manual

System Interface Unit
12-32 MPC823e REFERENCE MANUAL MOTOROLA
SYSTEM INTERFACE UNIT
12
TDI/DSDI functions as DSDI.
TDO/DSDO functions as DSDO.
01 = ALE_B/DSCK/AT1 functions as defined by DBGC.
IP_B6/DSDI/AT0 functions as defined by DBGC.
OP3/MODCK2/DSDO functions as defined by DBGC.
IP_B7/PTR
/AT3 functions as defined by DBGC.
TCK/DSCK functions as TCK.
TDI/DSDI functions as TDI.
TDO/DSDO functions as TDO.
10 = Reserved.
11 = ALE_B/DSCK/AT1 functions as DSCK.
IP_B6/DSDI/AT0 functions as DSDI.
OP3/MODCK2/DSDO functions as DSDO.
IP_B7/PTR
/AT3 functions as PTR.
TCK/DSCK functions as TCK.
TDI/DSDI functions as TDI.
TDO/DSDO functions as TDO.
FRC—FRZ Pin Configuration
This bit configures the functionality of the FRZ/IRQ6
pin.
0 = FRZ/IRQ6
functions as FRZ.
1 = FRZ/IRQ6
functions as IRQ6.
DLK—Debug Register Lock
If this bit is set, bits 8–15 are locked and writes to those bits are no longer performed. These
bits are writable in test mode once the internal FRZ signal is asserted, regardless of the state
of DLK. This bit is cleared by reset.
OPAR—Odd Parity
This bit is used to program odd or even parity. It can also be used to generate parity errors
for testing purposes by writing the memory with OPAR = 1 and reading the memory with
OPAR = 0.
PNCS—Parity Enable For Nonmemory Controller Regions
This bit enables parity generation/checking for memory regions not controlled by the
MPC823e memory controller.
DPC—Data Parity Pins Configuration
This bit configures the functionality of the DP[0:3]/IRQ
[3:6] pins.
0 = DP[0:3]/IRQ
[3:6] functions as IRQ[3:6].
1 = DP[0:3]/IRQ
[3:6] functions as DP[0:3].

Motorola MPC823e Specifications

General

Brand	Motorola
Model	MPC823e
Category	Computer Hardware
Language	English