Computer Hardware User Manual

Table Of Contents
Memory Maps
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1
Bit Rate and Clock Option Registers
Receive Frame Address Register1 RFAR1 1F B R/W Sync
Receive Frame Address Register2 RFAR2 1E B R/W Sync
Receive Frame Address Register3 RFAR3 1D B R/W Sync
Receive Frame Address Register4 RFAR4 1C B R/W Sync
CRC Polynomial Select Register CPSR D6 B R/W Sync
Receive Baud Rate Period Register RBPR CB B R/W
Receive Clock Option Register RCOR C8 B R/W
Transmit Baud Rate Period Register TBPR C3 B R/W
Transmit Clock Option Register TCOR C0 B R/W
Channel Command and Status Registers
Channel Command Register CCR 13 B R/W
Special Transmit Command Register STCR 12 B R/W
Channel Status Register CSR 1A B R
Modem Signal Value Registers MSVR-
RTS
DE B R/W
MSVR-
DTR
DF B R/W
Interrupt Registers
Local Interrupt Vector Register LIVR 09 B R/W
Interrupt Enable Register IER 11 B R/W
Local Interrupting Channel Register LICR 26 B R/W
Stack Register STK E2 B R
Receive Interrupt Registers
Receive Priority Interrupt Level Register RPILR E1 B R/W
Receive Interrupt Register RIR ED B R
Receive Interrupt Status Register RISR 88
W
(NOTE)
R/W
Table 1-9. Cirrus Logic CD2401 Serial Port Memory Map (Continued)
Base Address = $FFF45000
Register Description Register
Name
Offsets Size Access