參數(shù)資料
型號(hào): MSM7630
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: Universal Speech Processor(通用語(yǔ)音處理器)
中文描述: 通用語(yǔ)音處理器(通用語(yǔ)音處理器)
文件頁(yè)數(shù): 78/89頁(yè)
文件大?。?/td> 430K
代理商: MSM7630
MSM7630
Semiconductor
78/89
Timer Unit
1. Features
The timer unit (TMR) is a 16-bit programmable timer. It has two modes: an interval timer mode
which requests interrupts to the CPU core, and a clock division mode which generates a 50% duty,
frequency divided clock.
2. TMR Functions
2.1 Counter
16-bit up counter
2.2 Counter Clock Period
F
(SCP operating frequency
1)
4
F
(SCP operating frequency
4)
16
F
(SCP operating frequency
16)
64
F
(SCP operating frequency
64)
2.3 Interval Timer Interrupts
When the counter overflows (counter value changes from 0xFFFF to 0x0000), it will request an
interrupt to the CPU core.
2.4 Divided Clock Generation
When the counter overflows (counter value changes from 0xFFFF to 0x0000), it will invert the value
currently being output.
3. TMR Registers
3.1 TIR: Timer Initial Value Register
This register saves the counter’s initial value. When this register is written, the same value will be
written to the Timer Value Register (TCR). This register will be undefined after reset.
3.2 TCR: Timer Value Register
This register provides the counter’s current value. It will be undefined after reset.
TIR
0
15
bit
TCR
0
15
bit
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