參數資料
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: 36/98頁
文件大?。?/td> 1546K
代理商: SM34020AHTM32
SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D -- APRIL 1991 -- REVISED SEPTEMBER 2004
41
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251--1443
cycle timing examples (continued)
As a special 1-megabit VRAM control cycle, the clock strech is also performed when the PMASKL and PMASKH
registers are set to nonzero values, CST in DPYCTL is cleared, VEN in CONFIG is set, and the byte-aligned
pixel-write instruction is executed (Figure 20). This cycle is indicated by CAS,TR/QE, and SF high and WE low
at the falling edge of RAS and by SF low at the falling edge of CAS. The data on LAD is written to memory just
as a normal DRAM write except that data in the write mask is used to enable DQs that are written to memory.
During the address portion of the cycle, the status on LAD0--LAD3 indicates that a pixel operation is being
performed (status code = 1101).
Q4
Q1
Q2
Q3
Q1
Q2
Q3
Q4
Q1
Row
Address
Data Out 1
Q2
Q3
Q4
Q1
Data Out 2
1st Column
2nd Column
GI
LAD
CAMD
RCA
ALTCH
RAS
CAS
WE
TR/QE
SF
DDIN
DDOUT
LRDY
PGMD
SIZE16
BUSFLT
R0
R1
Q4
See clock stretch, page 21.
Figure 20. Write-Cycle Timing Using Mask
相關PDF資料
PDF描述
SM563 4-BIT, MROM, MICROCONTROLLER, PQFP64
SM565 4-BIT, MROM, MICROCONTROLLER, PQFP100
SM5K7 4-BIT, MROM, MICROCONTROLLER
SM5L3 4-BIT, MROM, MICROCONTROLLER, PQFP80
SM802104UMG 212.5 MHz, OTHER CLOCK GENERATOR, QCC24
相關代理商/技術參數
參數描述
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
SM34020GMB30 制造商:Texas Instruments 功能描述:
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