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Serial Interface
13-39
Serial 3 control register
Register symbol: SC3CTR
Address: x'34000830
Purpose: This register sets the serial interface 3 operation control conditions.
Bit No.1514131211109876543210
Bit SC3 SC3 SC3 SC3
––
SC3 SC3 SC3 SC3 SC3 SC3 SC3
–
SC3 SC3
name TXE RXE BKE TWS OD TWE CLN PB2 PB1 PB0 STB CK1 CK0
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Access R/W R/W R/W R/W R R R/W R/W R/W R/W R/W R/W R/W R R/W R/W
Bit No. Bit name Description
0 SC3CK0 Clock source selection (LSB)
1 SC3CK1 Clock source selection (MSB)
00:IOCLK
01:Timer 2 underflow
10:External clock
11:Timer 8 underflow
2 — "0" is returned when this bit is read.
3 SC3STB Stop bit selection
0: 1 bit
1: 2 bits
4 SC3PB0 Parity bit selection (LSB)
5 SC3PB1 Parity bit selection
6 SC3PB2 Parity bit selection (MSB)
000: None
001, 010, 011: Setting prohibited
100: 0 fixed
101: 1 fixed
110: Even (even number of ones)
111: Odd (odd number of ones)
7 SC3CLN Character length selection
0: 7 bits
1: 8 bits