參數(shù)資料
型號(hào): TMS34020
廠商: Texas Instruments, Inc.
英文描述: GRAPHICS PROCESSORS
中文描述: 圖形處理器
文件頁(yè)數(shù): 62/82頁(yè)
文件大?。?/td> 1359K
代理商: TMS34020
TMS34020, TMS34020A
GRAPHICS PROCESSORS
SPVS004D – MARCH 1990 – REVISED NOVEMBER 1993
62
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
PARAMETER MEASUREMENT INFORMATION
host interface timing responses (random read cycle) (see Figure 37)
NO.
PARAMETER
’34020-32
’34020A-32
’34020A-40
UNIT
MIN
30
MAX
MIN
25
MAX
33
tsu(RDL-CK2
)
Setup time, later of HCS low or HREAD low to LCLK2
Delay time from LCLK1
to HRDY high (end of read
cycle)
ns
39
td(CK1
-RYH)
tQ+20
tQ+18
ns
40
td(RDH-RYL)
Delay time from earlier of HREAD or HCS high to HRDY
low
20
18
ns
41
td(CK2
-STL)
td(CK1
-STH)
tsu(STL-RY
)
td(RY
-STH)
th(STH-CTV)
Delay time from LCLK2
to HDST low
Delay time from LCLK1
to HDST high
Setup time of HDST low to HRDY
Delay time from HRDY
to HDST high
tQ+15+ s
tQ+15
tQ+13.5+ s
tQ+13.5
ns
42
ns
43
tQ–15
tQ–13.5
ns
44
2tQ+15
2tQ+13.5
ns
50
Hold time, CAS, TR/QE, DDIN valid after HDST high
0
– 2
ns
Setup time to insure recognition of input on this clock edge.
Q4*
Q1
Q2
Q3
Q4*
Q1
Q2
Q3
Q4*
LCLK1
LCLK2
HCS/HREAD
HRDY
HDST
CAS
TR/QE
DDIN
33
43
33
26
40
41
39
42
44
50
*See clock stretch, page 21.
Figure 37. Host Interface Timing Responses (Random Read Cycle)
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