ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 301 -
Revision 2.4
MODEM Control Register (UARTn_MODEM)
Register
Offset
R/W
Description
Reset Value
UARTn_MODEM
U0x10 R/W
UART Modem Control Register.
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
RTSSTS
Reserved
RTSACTLV
Reserved
7
6
5
4
3
2
1
0
Reserved
LBMEN
Reserved
RTS
Reserved
Table 5-121 UART Modem Control Register (UARTn_MODEM, address 0x4005_0010)
Bits
Description
[31:14]
Reserved
Reserved.
[13]
RTSSTS
RTS Pin State (Read Only)
This bit is the pin status of RTS.
[12:10]
Reserved
Reserved.
[9]
RTSACTLV
Request-to-send (RTS) Active Trigger Level
This bit can change the RTS trigger level.
0= RTS is active low level.
1= RTS is active high level.
[8:5]
Reserved
Reserved.
[4]
LBMEN
Loopback Mode Enable
0=Disable.
1=Enable.
[3:2]
Reserved
Reserved.
[1]
RTS
RTS (Request-to-send) Signal
If UART_INTEN.ATORTSEN = 0, this bit controls whether RTS pin is active or not.
0 = Drive RTS inactive ( = ~RTSACTLV).
1 = Drive RTS active ( = RTSACTLV).
[0]
Reserved
Reserved.