mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 301

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

System Interface Unit
FRC—FRZ Pin Configuration
This bit configures the functionality of the FRZ/IRQ6 pin.
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
MPC823 memory controller.
DPC—Data Parity Pins Configuration
This bit configures the functionality of the DP[0:3]/IRQ[3:6] pins.
01 = ALE_B/DSCK/AT1 functions as defined by DBGC.
10 = Reserved.
11 = ALE_B/DSCK/AT1 functions as DSCK.
0 = FRZ/IRQ6 functions as FRZ.
1 = FRZ/IRQ6 functions as IRQ6.
0 = DP[0:3]/IRQ[3:6] functions as IRQ[3:6].
1 = DP[0:3]/IRQ[3:6] functions as DP[0:3].
TDI/DSDI functions as DSDI.
TDO/DSDO functions as DSDO.
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.
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
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