71M6403 Datasheet, PDF (23/75 Pages) Teridian Semiconductor Corporation – Electronic Trip Unit

71M6403
Electronic Trip Unit
SEPTEMBER 2006
Bit
S1CON.7
S1CON.5
S1CON.4
S1CON.3
S1CON.2
S1CON.1
S1CON.0
Symbol
SM
SM21
REN1
TB81
RB81
TI1
RI1
Function
Sets the baud rate for UART1
SM
Mode
Description
Baud Rate
0
A
9-bit UART
variable
1
B
8-bit UART
variable
Enables the inter-processor communication feature.
If set, enables serial reception. Cleared by software to disable reception.
The 9^th transmitted data bit in Mode A. Set or cleared by the MPU,
depending on the function it performs (parity check, multiprocessor
communication etc.)
In Modes 2 and 3, it is the 9^th data bit received. In Mode B, if sm21 is 0,
rb81 is the stop bit. In Mode 0 this bit is not used. Must be cleared by
software.
Transmit interrupt flag, set by hardware after completion of a serial
transfer. Must be cleared by software.
Receive interrupt flag, set by hardware after completion of a serial
reception. Must be cleared by software.
Table 16: The S1CON Bit Functions
Page: 23 of 75
© 2006 TERIDIAN Semiconductor Corporation
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