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參數(shù)資料
| 型號： | W561M02 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 音頻合成 |
| 英文描述： | 4-tone PCM Melody+ADPCM/PCM Voice Synthesizer(4音PCM音樂、ADPCM/PCM話音合成器) |
| 中文描述： | 120 SEC, SPEECH SYNTHESIZER |
| 文件頁數(shù)： | 20/62頁 |
| 文件大小： | 848K |
| 代理商： | W561M02 |
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W561XXX DESIGN GUIDE
- 20 -
Interrupt
Keyword
POI:
Reserved
TG:
Timer_interrupt:
Name
POR/Reset
Reserved
TG
Timer
Address
002H
008H
00AH
00CH
Instruction
JP POI
Reserved
JP TG
JP Timer_interrupt
Table 0-1. Interrupt vector
When an
ISR (Interrupt Service Routine) is in service, others (TG, Timer) are disabled by H/W
automatically. Only if otherwise enabled by S/W program through instructions that modify
content of IER, like "LD IER, operand", (the disable condition be released by this instruction upon
the updating of IER), or enable interrupt EN INT , other interrupts (except for POR) are
disabled until the reaching of RTI (interrupt enabled again by H/W automatically), which indicates
the finish of an ISR. Special care goes to the prevention of STACK overflow, since only
maximum 8-level stack register is shared among all interrupt sources, and CALL instruction.
The POR/Reset is Non-Maskable Interrupt (NMI). The program execution and channel
operations all return to initial states as in power up conditions.
Other interrupt sources are processed in a polling sequence of the priority: TG => Timer, if occur
simultaneously. If an interrupt is disabled during ISR of other interrupts, it is latched and shall be
serviced right after the release of the disable condition.
Trigger
Since all P0 & P1 triggers share the same TG interrupt vector, users have to further differentiate
the real one from others by programming. Also, trigger debounce should be considered in the TG
section. Though a little bit complex than PowerSpeech, which is done by H/W debounce circuit,
but on the other hand, it do mean more flexibility.
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| W561S15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
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| W561S30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| W561S40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BandDirectorTM Family |
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