AP513 ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 44 -
http://www.acromag.com
- 44 -
www.acromag.com
FIFO will be sent out. Please note that setting this
bit to a logic 1 stops any character from going
out. Also, this bit must be a logic 0 for the Send
Char Immediate function (see MCR[3]).
7-4
Not Used.
Not Used.
3.4.12 Scratch Pad (SCR)
–
Read/Write
This 8-bit read/write register has no effect on the operation of either serial
channel. It is provided as an aide to the programmer to temporarily hold
data.
3.4.13 Feature Control Register (FCTR)
–
Read/Write
This register controls the UART enhanced functions that are not available on
ST16C554 or ST16C654.
Table 3.20 FCTR
–
Feature Control
Register
FCTR
Bit
FUNCTION PROGRAMMING
3-0
Auto
RTS/DTR
Flow
Control
Hysteresis
Select
0000 = 0 Hysteresis (characters)
0001 = ±4
0010 = ±6
0011 = ±8
0100 = ±8
0101 = ±16
0110 = ±24
0111 = ±32
1100 = ±12
1101 = ±20
1110 = ±28
1111 = ±36
1000 = ±40
1001 = ±44
1010 = ±48
1011 = ±52
4
Not Used
N/A
