Rainbow Electronics AT90LS4433 - Manual (Page 61)

61
AT90S/LS4433
1042G–AVR–09/02
UART Baud Rate Register –
UBRR
This is a 12-bit register that contains the UART Baud Rate according to the equation on
the previous page. The UBRRHI contains the four most significant bits, and the UBRR
contains the eight least significant bits of the UART Baud Rate.
Bit 15 14 13 12 11 10 9 8
$03 ($23) – – – – MSB LSB UBRRHI
$09 ($29) MSB LSB UBRR
7 6 5 4 3 2 1 0
Read/Write R R R R R/W R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0