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| 型號： | SMJ34020AHT |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | GRAPHICS SYSTEM PROCESSOR |
| 中文描述： | 圖形系統(tǒng)處理器 |
| 文件頁數(shù)： | 39/92頁 |
| 文件大?。?/td> | 1458K |
| 代理商： | SMJ34020AHT |
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SMJ34020A
GRAPHICS SYSTEMPROCESSOR
SGUS011B – APRIL 1991 – REVISED AUGUST 1995
39
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
cycle timing examples (continued)
The VRAM cycle shown in Figure 14 is issued in any of three ways:
Pixel operation instruction with CST in DPYCTL set
Horizontal blank reload cycle requested by the video-control logic with VCE in DPYCTL cleared
Video timeout due to SCOUNT match with the value in MLRNXT and VCE and SSV in DPYCTL cleared
This cycle is indicated by TR/QE and SF low and CAS and WE high at the time RAS goes low. The timing of
the low-to-high transition of TR/QE is dependent upon the timing of SCLK when doing a midline reload cycle.
During the address portion of the cycle, the status on LAD0–LAD3 indicates either a video-initiated VRAM
memory-to-register transfer (status code = 0100), or a CPU-initiated VRAM memory-to-register transfer
(status code = 0101).
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| SMJ34020AHTM32 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GRAPHICS SYSTEM PROCESSOR |
| SMJ34020AHTM40 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GRAPHICS SYSTEM PROCESSOR |
| SMJ34020HTM28 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SMJ34061GB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Non-VGA Video Controller |
| SMJ34061GBS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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