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): 72/82頁
文件大?。?/td> 1359K
代理商: TMS34020
TMS34020, TMS34020A
GRAPHICS PROCESSORS
SPVS004D – MARCH 1990 – REVISED NOVEMBER 1993
72
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
PARAMETER MEASUREMENT INFORMATION
multiprocessor interface timing: GI, ALTCH, RAS, R0 and R1 (see Figure 44)
NO.
PARAMETER
’34020-32
’34020A-32
’34020A-40
UNIT
MIN
MAX
MIN
MAX
105
ta(GIV-RQV)
Access time, GI valid after R0 and R1 valid
(see Notes 5 and 6)
2tQ–40
2tQ–30
ns
j
tsu(GIV-CK1
)
Setup time, GI valid before LCLK1 no longer low
(see Note 6)
40
35
ns
106
th(CK1
-GIV)
td(CK2
-RQV)
td(CK2H-RQNV)
5. These timings must be met to insure that the GI input is recognized on this clock cycle.
6. It is required that either specification j or specification 105 be observed for the multiprocessor interface to function correctly. It is not
necessary for both to be met.
Hold time, GI valid after LCLK1
(see Note 5)
Delay time, LCLK2
to R0 or R1 valid
0
0
ns
107
tQ+15
tQ+13.5
ns
108
Delay time, LCLK2 high to R0 or R1 no longer valid
tQ–15
tQ–13.5
ns
NOTES:
GI
R0–R1
LCLK2
LCLK1
106
105
Q4*
Q1
Q2
Q3
Q4*
Q1
Q2
Q3
Q4*
Q1
Q2
Q3
Q4*
Q1
Valid
Valid
108
107
j
*See clock stretch, page 21.
Figure 44. Multiprocessor Interface Timing: GI, ALTCH, RAS, R0 and R1
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