參數(shù)資料
型號: PSD511B1
英文描述: Field Programmable Microcontroller Peripherals(可編程邏輯,16K位SRAM,40個可編程I/O,通用PLD有61個輸入)
中文描述: 現(xiàn)場可編程微控制器外圍設備(可編程邏輯,16K的位的SRAM,40余個可編程輸入/輸出,通用PLD的有61個輸入)
文件頁數(shù): 82/130頁
文件大小: 704K
代理商: PSD511B1
PSD5XX Famly
6-82
Gobal Command Register
This is used to specify the operation mode of the Counter/Timer and to start or stop the
Counter/Timer. Therefore during the initialization of the Counter/Timer registers, the Global
Command Register should always be configured last.
Counter/Timer
Registers
(Cont.)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
*
*
*
*
Watch
Dog
Global
Mode
Counter
Start
Scale
NOTE:
*
= Not used.
At RESET all bits come up as 0’s.
Watch Dog Bit:
When this bit is
0: Watch Dog mode is NOT selected.
1: Watch Dog Counter/Timer (Counter 2) is active. This bit can be
turned off by RESET only.
NOTE:
Whenever this bit is set to 1, the COUNTER START bit should
also be set to 1. Otherwise the Counter/Timer will always be off,
i.e., once this bit is set, access to Counter 2 Registers and the Global
Command Registers are blocked.
Global Mode Bit:
When this bit is set to a
0: All Timers/Counters are set to Waveform or Pulse Mode.
1: All Timers/Counters are set to operate in Event Counter or Time
Capture Mode.
NOTE:
Further selection of modes is done in individual CMD registers.
Counter Start Bit:
When this bit is set to
0: ALL CTUs are disabled and can be re-initialized.
1: ALL CTUs are enabled.
Scale Bit:
When this bit is set to
0: The clock to all Counter/Timers is divided by 1.
1: The clock to all Counter/Timers is divided by 8.
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