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參數資料
型號: TMP320F2810PBKS
廠商: Texas Instruments, Inc.
元件分類: 數字信號處理
英文描述: DIGITAL SIGNAL PROCESSORS
中文描述: 數字信號處理器
文件頁數: 52/103頁
文件大小: 1341K
代理商: TMP320F2810PBKS
TMS320F2810, TMS320F2812
DIGITAL SIGNAL PROCESSORS
SPRS174B
APRIL 2001
REVISED SEPTEMBER 2001
52
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
watchdog block (continued)
Table 37. WDCNTR Register Bit Definitions
BIT(S)
NAME
TYPE
RESET
DESCRIPTION
7:0
WDCNTR
R/W
0:0
These bits contain the current value of the WD counter. The 8-bit
counter continually increments at the WDCLK rate. If the counter
overflows, then the watchdog initiates a reset. If the WDKEY register
is written with a valid combination, then the counter is reset to zero.
15:8
reserved
R=0
0:0
Table 38. WDKEY Register Bit Definitions
BIT(S)
NAME
TYPE
RESET
DESCRIPTION
7:0
WDKEY
W/R=0
0:0
Writing 0x55 followed by 0xAA will cause the WDCNTR bits to be
cleared. Writing any other value will cause an immediate watchdog
reset to be generated.
15:8
reserved
R=0
0:0
Table 39. WDCR Register Bit Definitions
BIT(S)
NAME
TYPE
RESET
DESCRIPTION
2:0
WDPS(2:0)
R/W
0:0
These bits configure the watchdog counter clock (WDCLK) rate relative
to OSCCLK/512:
000
WDCLK = OSCCLK/512/1
001
WDCLK = OSCCLK/512/1
010
WDCLK = OSCCLK/512/2
011
WDCLK = OSCCLK/512/4
100
WDCLK = OSCCLK/512/8
101
WDCLK = OSCCLK/512/16
110
WDCLK = OSCCLK/512/32
111
WDCLK = OSCCLK/512/64
5:3
WDCHK(2:0)
W/R=0
0:0
The user must ALWAYS write
1,0,1
to these bits whenever a write to
this register is performed. Writing any other value will cause an
immediate reset to the core (if WD enabled).
6
WDDIS
R/W
0
Writing a 1 to this bit will disable the watchdog module. Writing a 0 will
enable the module. This bit can only be modified if the WDOVERRIDE
bit in the SCSR2 register is set to 1. On reset, the watchdog module is
enabled.
7
WDFLAG
R/W=1
Watchdog reset status flag bit. This bit, if set, indicates a watchdog
reset (WDRST) generated the reset condition. If 0, then it was an
external device or power-up reset condition. This bit remains latched
until the user writes a 1 to clear the condition. Writes of 0 will be ignored.
15:8
reserved
R=0
0:0
P
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