Serial channel b/a/c/d flow control force register – Digi NS9750 User Manual
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S e r i a l p o r t c o n t r o l a n d s t a t u s r e g i s t e r s
6 3 8
N S 9 7 5 0 H a r d w a r e R e f e r e n c e
Serial Channel B/A/C/D Flow Control Force register
Address: 9020 0038 / 0078
9030 0038 / 0078
The Serial Channel B/A/C/D Flow Control Force register allows you to override the
normal flow of transmit data.
Register bit assignment
Bits
Access
Mnemonic
Reset
Description
D31:21
R
Not used
0x000
Always read as 0x000.
D20
R
TX_IDLE
0
Transmit idle
Indicates whether the transmit state machine has been
forced into an idle state by writing a 1 to the TX_DIS field
(see D17).
D19:18
R
Not used
00
Always read as 00.
D17
R/W
TX_DIS
0
Transmit disable
Allows you to force the transmit state machine into the
idle state. If a transmission is in progress, the current byte
will complete before the state machine moves into the idle
state.
Write a 1 to enable this feature.
Table 379: Serial Channel B/A/C/D Flow Control Force register
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Not used
Not used
TX_
IDLE
FORCE_CHAR
Not used
TX_
DIS
FORCE_
EN