Preliminary
THCV245A_Rev.0.90_E
Copyright©2020 THine Electronics, Inc.
THine Electronics, Inc.
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6.18 2-wire serial I/F Watch Dog Timer
2-wire Watch Dog Timer (WDT) is installed to monitor status.
Table 29.
2-wire WDT setting
6.19 Register Auto Checksum diagnosis
Register values checksum is continuously calculated as R_CKSUM_RVAL and checked compared to user-
defined target, R_CKSUM_VAL. If any change occurs, it can be reported as interrupt.
Table 30.
Register Auto Checksum diagnosis control and monitoring
M
aster
Master
Slave
or
S
lav e
Addr(h) Addr(h)
Bits
Register
w idth
R/W
Description
Default
related
0x004B 0x00CB
[4]
R_2WIRE_WD_EN
1
RW
2-w ire WDT Enable
0:Disable
1:Enable
1'b1
MS
0x004B 0x00CB
[0]
R_2WIRE_WD_OFFSET
1
RW
2-w ire WDT offset time
1:11'd2047
0:11'd1023
1'd1
MS
0x004C 0x00CC
[7:0]
R_2WIRE_WD_TIM
8
RW
2-w ire WDT time = 64×{R_2WIRE_WD_TIM<7:0>+1}×{"2WIRE WDT
of fset time"} × tOSC
8'd255
MS
Sub-Link
M
aster
Master
Slave
or
S
lav e
Addr(h) Addr(h)
Bits
Register
w idth
R/W
Description
Default
related
0x0008 0x0088
[0]
R_CKSUM_EN
1
RW
Internal Register AutoCheckSum Enable
0:Disable
1:Enable
1'b0
MS
0x0009 0x0089
[7:0]
R_CKSUM_TIM
8
RW
Internal Register AutoCheckSum check interval
=1024×64×(R_CKSUM_TIM<7:0>+1) × tOSC
8'd19
MS
0x000A 0x008A
[7:0]
R_CKSUM_VAL
8
RW
Internal Register AutoCheckSum expected target value
8'd0
MS
0x000B 0x008B
[7:0]
R_CKSUM_RVAL
8
R
Internal Register AutoCheckSum read value
-
MS
0x0060 0x00E0
[4]
R_INT_CKSUM_ERR
1
R
Interrupt factor: Internal register Checksum error
1: Interrupt (error is detected)
-
MS
0x0061 0x00E1
[4]
R_INTM_CKSUM_ERR
1
RW
Interrupt mask: Internal register CheckSum error
0: Interrupt mask
1'b0
MS
0x0062 0x00E2
[4]
R_INTC_CKSUM_ERR
1
W
Interrupt clear: Internal register CheckSum error
1: Interrupt clear
-
MS
Sub-Link
