Table 164. BDRCON Register
BDRCON (S:92h) – Baud Rate Generator Control Register
7
-
6
-
5
-
4
3
2
1
0
BRR
TBCK
RBCK
SPD
M0SRC
Bit
Bit
Number
Mnemonic Description
Reserved
7 - 5
4
-
The value read from these bits are indeterminate. Do not set these bits.
Baud Rate Run Bit
Set to enable the baud rate generator.
Clear to disable the baud rate generator.
BRR
TBCK
RBCK
SPD
Transmission Baud Rate Selection Bit
Set to select the baud rate generator as transmission baud rate generator.
Clear to select the Timer 1 as transmission baud rate generator.
3
2
1
0
Reception Baud Rate Selection Bit
Set to select the baud rate generator as reception baud rate generator.
Clear to select the Timer 1 as reception baud rate generator.
Baud Rate Speed Bit
Set to select high speed baud rate generation.
Clear to select low speed baud rate generation.
Mode 0 Baud Rate Source Bit
M0SRC Set to select the variable baud rate generator in Mode 0.
Clear to select fixed baud rate in Mode 0.
Reset Value = XXX0 0000b
Table 165. BRL Register
BRL (S:91h) – Baud Rate Generator Reload Register
7
6
5
4
3
2
1
0
BRL7
BRL6
BRL5
BRL4
BRL3
BRL2
BRL1
BRL0
Bit
Bit
Number
Mnemonic Description
7 - 0
BRL7:0 Baud Rate Reload Value
Reset Value = 0000 0000b
180
AT8xC51SND2C
4341D–MP3–04/05
ATMEL [ ATMEL ]
