AT80SND2CMP3B datasheet(180/242 Pages) ATMEL

180 / 242 page

180

4341H–MP3–10/07

AT8xC51SND2C/MP3B

Table 20-7.

BDRCON Register

BDRCON (S:92h) – Baud Rate Generator Control Register

Reset Value = XXX0 0000b

Table 20-8.

BRL Register

BRL (S:91h) – Baud Rate Generator Reload Register

Reset Value = 0000 0000b

BRR

TBCK

RBCK

SPD

M0SRC

Bit Number

Bit

Mnemonic

Description

7 - 5

Reserved

The value read from these bits are indeterminate. Do not set these bits.

BRR

Baud Rate Run Bit

Set to enable the baud rate generator.

Clear to disable the baud rate generator.

TBCK

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.

RBCK

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.

SPD

Baud Rate Speed Bit

Set to select high speed baud rate generation.

Clear to select low speed baud rate generation.

M0SRC

Mode 0 Baud Rate Source Bit

Set to select the variable baud rate generator in Mode 0.

Clear to select fixed baud rate in Mode 0.

BRL7

BRL6

BRL5

BRL4

BRL3

BRL2

BRL1

BRL0

Bit Number

Bit

Mnemonic

Description

7 - 0

BRL7:0

Baud Rate Reload Value

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