參數(shù)資料
型號: TMS34020
廠商: Texas Instruments, Inc.
英文描述: GRAPHICS PROCESSORS
中文描述: 圖形處理器
文件頁數(shù): 76/82頁
文件大小: 1359K
代理商: TMS34020
TMS34020, TMS34020A
GRAPHICS PROCESSORS
SPVS004D – MARCH 1990 – REVISED NOVEMBER 1993
76
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
PARAMETER MEASUREMENT INFORMATION
video interface timing: VCLK and video outputs
NO.
PARAMETER
’34020-32
’34020A-32
’34020A-40
UNIT
MIN
62.5
MAX
100
MIN
62.5
MAX
100
123
tc(VCK)
tw(VCKH)
tw(VCKL)
tt(VCK)
Period of video input clock VCLK
ns
124
Pulse duration of VCLK high
28
28
ns
125
Pulse duration of 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(VCK
-HS
)
Hold time, VCLK
to HSYNC, VSYNC, CSYNC/HBLNK, or
CBLNK/VBLNK
Hold time, VCLK
to HSYNC, VSYNC, CSYNC/HBLNK, or
CBLNK/VBLNK
This value is determined through computer simulation and is not tested.
0
0
ns
130
th(VCK
-HS
)
0
0
ns
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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