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參數(shù)資料
| 型號： | SM34020AHTM32 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 圖形處理器 |
| 英文描述： | GRAPHICS PROCESSOR, CQFP132 |
| 封裝： | CERAMIC, QFP-132 |
| 文件頁數(shù)： | 48/98頁 |
| 文件大?。?/td> | 1546K |
| 代理商： | SM34020AHTM32 |
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SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D -- APRIL 1991 -- REVISED SEPTEMBER 2004
52
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251--1443
cycle timing examples (continued)
The host-access request is synchronized to the SMJ34020A at the beginning of Q4 so that the local memory
cycle can begin in Q1.
In block mode (prefetch after read), the SMJ34020A automatically initiates sequential read accesses as soon
as the host deasserts the current read request. In this example, the host reads a location and must wait for the
first access to complete. When the host removes HREAD (Figure 28), indicating the end of the first read, the
SMJ34020A starts to prefetch the next sequential location. When the host makes the next request, the
SMJ34020A has prefetched the data so that the host reads with no delay. While in block mode, the SMJ34020A
continues to prefetch data for the host read each time the host removes either HREAD or HCS. If the address
present and latched at the falling edge of HCS matches the previously prefetched address, HRDY is asserted
high so that the host can read with no delay.
In read-modify-write mode (prefetch after write), the SMJ34020A initiates the read access as soon as the current
write request is deasserted.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SM34020AHTM40 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GRAPHICS SYSTEM PROCESSOR |
| SM34020APCM40 | 制造商:Texas Instruments 功能描述:Graphics System Processor 144-Pin PQFP 制造商:Texas Instruments 功能描述:GRAPHICS SYS PROCESSOR 144PQFP - Trays |
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| SM34061A WAF | 制造商:Texas Instruments 功能描述: |
| SM34061GB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Non-VGA Video Controller |
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