參數(shù)資料
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): 87/92頁
文件大小: 1458K
代理商: SMJ34020AHT
SMJ34020A
GRAPHICS SYSTEMPROCESSOR
SGUS011B – APRIL 1991 – REVISED AUGUST 1995
87
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
video-shift-clock timing: SCLK (see Figure 46)
NO.
’34020A-32
MIN
’34020A-40
MIN
UNIT
MAX
MAX
117
tc(SCK)
tw(SCKH)
tw(SCKL)
tt(SCK)
Cycle time, period of video serial clock SCLK
35
50
25
50
ns
118
Pulse duration, SCLK high
12
10
ns
119
Pulse duration, SCLK low
12
2
10
2
ns
120
Transition time, (rise and fall) of SCLK
5
5
ns
This value is determined through computer simulation and is not tested.
SCLK
120
120
117
119
118
Figure 46. Video-Shift-Clock Timing: SCLK
video-interface timing: VCLK and video outputs (see Figure 47)
NO.
’34020A-32
MIN
62.5
’34020A-40
MIN
62.5
UNIT
MAX
100
MAX
100
123
tc(VCK)
tw(VCKH)
tw(VCKL)
tt(VCK)
Cycle time, period of video input clock VCLK
ns
124
Pulse duration, VCLK high
28
28
ns
125
Pulse duration, VCLK low
28
2
28
2
ns
126
Transition time, (rise and fall) of VCLK
5
5
ns
127
td(VCKL-HSL)
Delay time, VCLK low to HSYNC, VSYNC, CSYNC/VBLNK or
CBLNK/VBLNK low
40
40
ns
128
td(VCKL-HSH)
Delay time, VCLK low to HSYNC, VSYNC, CSYNC/HBLNK, or
CBLNK/VBLNK high
40
40
ns
129
th(VCKL-HSL)
Hold time, VCLK no longer high to HSYNC, VSYNC,
CSYNC/HBLNK, or CBLNK/VBLNK no longer high
0
0
ns
130
th(VCKL-HSH)
Hold time, VCLK no longer high to HSYNC, VSYNC,
CSYNC/HBLNK, or CBLNK/VBLNK no longer low
0
0
ns
This value is determined through computer simulation and is not tested.
VCLK
HSYNC
VSYNC
CSYNC/HBLNK
CBLNK/VBLNK
(outputs)
130
127
129
128
126
126
123
125
124
Figure 47. Video-Interface Timing: VCLK and Video Outputs
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