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C-1
APPENDIX C
REGISTERS
This appendix provides reference information about the device registers. Table C-1 lists the mod-
ules and major components of the device with their related configuration and status registers. Ta-
ble C-2 lists the registers, arranged alphabetically by mnemonic, along with their names,
addresses, and reset values. Following the tables, individual descriptions of the registers are ar-
ranged alphabetically by mnemonic.
.
Table C-1. Modules and Related Registers
Chip Configuration
Chip-select Units
(
x
= 0–5)
CPU
(
x
= 0, 2)
EPA
(
x
= 0–3)
CCR0 ADDRCOM
x
ACC_0
x
(80C196NU) EPA_MASK
CCR1 ADDRMSK
x
ACC_STAT (80C196NU) EPA_PEND
BUSCON
x
ONES_REG EPA
x
_CON
PSW EPA
x
_TIME
SP
ZERO_REG
Extended Port
I/O Ports
(
x
= 1–4)
Interrupts Memory Control
EP_DIR P
x
_DIR INT_MASK WSR
EP_MODE P
x
_MODE INT_MASK1 WSR1 (80C196NU)
EP_PIN P
x
_PIN INT_PEND
EP_REG P
x
_REG INT_PEND1
PWM
(
x
= 0–2)
PTS Serial Port
Timers
(
x
= 1–2)
CON_REG0 PTSSEL SBUF_RX TIMER
x
PWM
x
_CONTROL PTSSRV SBUF_TX T
x
CONTROL
SP_BAUD
SP_CON
SP_STATUS