Intel 80C196NU User Manual
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.
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