USB to Quad Serial Port Bridge Data Sheet
Oxford Semiconductor, Inc.
UART 1 LineControl
Offset: 0x0BF00
UART 2 LineControl
Offset: 0x0BF10
UART 3 LineControl
Offset: 0x0BF20
UART 4LineControl
Offset: 0x0BF30
Reset: 0x00
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
W[1] W[0] BK
SP
OE
PE
S
Div32 Div8 B[2] B[1] B[0]
Read/write
W[1:0]
BK
Word length; must be one of:
00—5 bits
01—6 bits
10—7 bits
11—8 bits
Break trigger; must be one of:
0—resumes serial output
1—stops serial output
When a break is in force, serial output becomes inactive and remains so,
regardless of transmitter activity, until BK is cleared
SP
Stick parity; must be one of:
0—no action
1—send parity as 0 if even, or 1 if odd
OE
PE
Parity indicator; must be one of:
0—even
1—odd
Parity enable; must be one of:
0—turn parity off
1—turn parity off
S
Number of stop bits; must be one of:
0—1 stop bit
1—2 stop bits
Div32
Pre-scaler trigger; used in conjunction with B[2:0]. Must be one of:
0—not used
1—used
If the pre-scaler is used, its effect is to divide the input clock by 32 to generate
the UART clock
Div8
Pre-scaler trigger; used in conjunction with B[2:0]. Must be one of:
0—not used
1—used
If the pre-scaler is used, its effect is to divide the input clock by 8 to generate
the UART clock
B[2:0]
Baud rate selector; see Table 4 on page 11 for details
10
External—Free Release
DS-0016 Oct 06
OXFORD [ OXFORD SEMICONDUCTOR ]
