AP513 ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 37 -
http://www.acromag.com
- 37 -
www.acromag.com
0 0
0 1
1 0
1 1
0 1
1 0
1 1
8
16
56
60
16
32
56
D
1 1
X X
X X
Prog.
via
RXTRIG
reg.
Prog.
via
TXTRIG
reg.
16L2752, 16L2750,
16C2852, 16C850,
16C854, 16C864
3.4.7 Line Control Register (LCR)
–
Read/Write
The Line Control Register is used to specify the asynchronous data
communication format. The word length, the number of stop bits, and the
parity are selected by writing the appropriate bits in this register. The
individual bits of this register control the format of the data character as
follows:
Table 3.15 Line Control Register
LCR
Bit
FUNCTION PROGRAMMING
1,0
Word
Length
Select
0 0 = 5 Data Bits 0 1 = 6 Data Bits
1 0 = 7 Data Bits 1 1 = 8 Data Bits
2
Stop Bit
Select
0 = 1 Stop Bit
1 = 1.5 Stop Bits if 5 data bits; 2 Stop
Bits if 6, 7, or 8 data bits selected.
3
Parity
Enable
0 = Parity Disabled, 1 = Parity Enabled
A parity bit is generated and checked for between
the last data word bit and the stop bit.
4
Even-
Parity
Select
0 = Odd Parity
1 = Even Parity
5
Stick
Parity
0 = Disabled, 1 = Enabled
When parity is enabled, stick parity causes the
transmission and reception of a parity bit to be in
