Datasheet

ADuC7060/ADuC7061 Data Sheet
Rev. D | Page 82 of 108
Table 90. COMCON0 MMR Bit Designations
Bit Name Description
7 DLAB Divisor latch access.
Set by user to enable access to the COMDIV0 and COMDIV1 registers.
Cleared by user to disable access to COMDIV0 and COMDIV1 and enable access to COMRX,
COMTX, and COMIEN0.
6 BRK Set break.
Set by user to force transmit to 0.
Cleared to operate in normal mode.
5 SP Stick parity. Set by user to force parity to defined values.
1 if EPS = 1 and PEN = 1.
0 if EPS = 0 and PEN = 1.
4 EPS Even parity select bit.
Set for even parity.
Cleared for odd parity.
3 PEN Parity enable bit.
Set by user to transmit and check the parity bit.
Cleared by user for no parity transmission or checking.
2 Stop Stop bit.
Set by user to transmit 1.5 stop bits if the word length is 5 bits, or 2 stop bits if the word length is 6
bits, 7 bits
, or 8 bits. The receiver checks the first stop bit only, regardless of the number of stop bits
selected.
Cleared by user to generate one stop bit in the transmitted data.
1:0 WLS Word length select.
[00] = 5 bits.
[01] = 6 bits.
[10] = 7 bits.
[11] = 8 bits.