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D-61
SYSTEM REGISTER QUICK REFERENCE
D.61 SSIOCTR
D.62 SSIORBUF
Baud-rate Count Down
SSIOCTR
(read only)
Expanded Addr:
ISA Addr:
Reset State:
F48AH
—
00H
7 0
BSTAT CV6 CV5 CV4 CV3 CV2 CV1 CV0
Bit
Number
Bit
Mnemonic
Function
7 BSTAT Baud-rate Generator Status:
0 = The baud-rate generator is disabled.
1 = The baud-rate generator is enabled.
6–0 CV6:0 Current Value:
These bits indicate the current value of the baud-rate down counter.
Receive Holding Buffer
SSIORBUF
(read only)
Expanded Addr:
ISA Addr:
Reset State:
F482H
—
0000H
15 8
RB15 RB14 RB13 RB12 RB11 RB10 RB9 RB8
7 0
RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0
Bit
Number
Bit
Mnemonic
Function
15–0 RB15:0 Receive Buffer Bits:
This register contains the last word received. The receive shift register
shifts bits in with the rising edge of the receiver clock pin. Data is shifted
in starting with the most-significant bit. The control logic then transfers
the received word from the receive shift register to SSIORBUF.