ISD94100 Series Technical Reference Manual
Sep 9, 2019
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Rev1.09
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UART Wake-up Control Register (UART_WKCTL)
Register
Offset
R/W Description
Reset Value
UART_WKCTL
U0x40
R/W UART Wake-up 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
7
6
5
4
3
2
1
0
Reserved
WKTOUTEN WKRS485EN WKRFRTEN
WKDATEN
WKCTSEN
Bits
Description
[31:5]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[4]
WKTOUTEN
RX FIFO Time-out Wake-up Enable Bit
0 = RX FIFO time-out wake-up system function Disabled.
1 = RX FIFO time-out wake-up system function Enabled: a time-out event for RX FIFO not
reaching threshold wakes up the system from power down mode.
Note:
It is suggest the function is enabled when the WKRFRTEN (UART_WKCTL[2]) is set
to 1.
[3]
WKRS485EN
RS-485 Address Match (AAD Mode) Wake-up Enable Bit
0 = RS-485 Address Match (AAD mode) wake-up system function Disabled.
1 = RS-485 Address Match (AAD mode) wake-up system function Enabled, when the system
is in.
Power-down mode, RS-485 Address Match will wake-up system from Power-down mode.
Note:
This bit is used for RS-485 Auto Address Detection (AAD) mode in RS-485 function
mode
and ADDRDEN (UART_ALTCTL[15]) is set to 1.
[2]
WKRFRTEN
RX FIFO Reached Threshold Wake-up Enable Bit
0 = RX FIFO reached threshold wake-up system function Disabled.
1 = RX FIFO reached threshold wake-up system function Enabled: RX FIFO reaching
threshold wakes up the system from power down mode.
[1]
WKDATEN
Incoming Data Wake-up Enable Bit
0 = Incoming data wake-up system function Disabled.
1 = Incoming data wake-up system function Enabled, when the system is in Power-down
mode,.
incoming data will wake-up system from Power-down mode.
[0]
WKCTSEN
nCTS Wake-up Enable Bit
0 = nCTS Wake-up system function Disabled.
1 = nCTS Wake-up system function Enabled, when the system is in Power-down mode, an