AT73C203_14 Datasheet, PDF (39/106 Pages) ATMEL Corporation – Power Management

AT73C203
Receiver Holding Register
Name:
Access:
SIM_RHR (0x38)
Read-only
7
6
5
4
3
RHR
2
1
0
First character received if RXRDY is set.
Transmitter Holding Register
Name:
SIM_THR (0x31)
Access:
Write-only
7
6
5
4
3
THR
2
1
0
Next character to be transmitted. If transmitter FIFO is full, the last character is overwritten.
Baud Divisor Register
Name:
Access:
SIM_BDR (0x3A)
Read/Write
7
6
5
4
-
3
2
BDR
1
0
The baud rate = f/(div1 x div2) where f is the SIM clock frequency.
div1 is coded on BDR[6].
BDR[6]
div1
0
1
31
32
div2 is coded on BDR[5:0].
BDR[5:0]
0
div2
64
BDR reset value = b0001100. Initial baud rate = 372.
1 - 63
BDR[5:0]
39
2742B–PMGMT–03/04