
Programmable Four-Channel Communications Controller
—
CD2481
Datasheet
29
Transmit Special Mapped Character 2 (TSPMAP2)
Transmit Special Mapped Character 3 (TSPMAP3)
04
2D
07
2E
B
B
R/W PPP
R/W PPP
Transmit Async Control Character Maps (PPP only)
Transmit Async Control Character Map 0 (TXACCM0) 1C
Transmit Async Control Character Map 1 (TXACCM1) 1D
Transmit Async Control Character Map 2 (TXACCM2) 1E
Transmit Async Control Character Map 3 (TXACCM3) 1F
1F
1E
1D
1C
W/B R/W PPP
W/B R/W PPP
W/B R/W PPP
W/B R/W PPP
Receive Async Control Character Maps (PPP only)
Receive Async Control Character Map 0 (RXACCM0)
Receive Async Control Character Map 1 (RXACCM1)
Receive Async Control Character Map 2 (RXACCM2)
Receive Async Control Character Map 3 (RXACCM3)
20
21
22
23
23
22
21
20
W/B R/W PPP
W/B R/W PPP
W/B R/W PPP
W/B R/W PPP
4.2.3
Bit Rate and Clock Option Registers
Receive Baud Rate Period Register (RBPR)
C9
CB
B
R/W
Receive Clock Option Register (RCOR)
CA
C8
B
R/W
Transmit Baud Rate Period Register (TBPR)
C1
C3
B
R/W
Transmit Clock Option Register (TCOR)
C2
C0
B
R/W
4.2.4
Channel Command and Status Registers
Channel Command Register (CCR)
Mode 1
10
13
B
R/W
Mode 2
Receive Baud Rate Period (Divisor)
TLVal
0
DpllEn
Dpllmd1
Dpllmd0
ClkSel2
ClkSel1
ClkSel0
Transmit Baud Rate Period (Divisor)
ClkSel2
ClkSel1
ClkSel0
0
Ext-1X
0
LLM
0
0
ClrCh
InitCh
RstAll
EnTx
DisTx
EnRx
DisRx
1
ClrT1
ClrT2
ClrRx
ClrTx
0
0
0