SMJ34020A_06 Datasheet, PDF (82/97 Pages) Texas Instruments – GRAPHICS SYSTEM PROCESSOR

SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D − APRIL 1991 − REVISED SEPTEMBER 2004
local-bus timing: RAS, CAS0−CAS3, WE, TR/QE, and SF (see Notes 5 and 8 and Figure 49)
NO.
Hold time, LAD0 −LAD31 read data valid
62
th(LAV-CTV) after earlier of DDIN, low after RAS,
CAS, or TR / QE high
Delay time, RAS low after LCLK1 no
76
td(CK1L-REL) _{longer high}
77
td(CK1L-REH)
Delay time, RAS high after LCLK1 no
longer high
78
td(CK1H-CEL)
Delay time, CAS low after LCLK1 no
longer low
79
td(CK1L-CEH)
Delay time, CAS high after LCLK1 no
longer high
Delay time, WE low after LCLK2 no
80
td(CK2L-WEL) _{longer high}
81
td(CK1L-WEH)
Delay time, WE high after LCLK1 no
longer high
82
td(CK2L-TRL)
Delay time, TR / QE low after LCLK2 no
longer high
83
td(CK1L-TRH)
Delay time, TR / QE high after LCLK1 no
longer high
Delay time, SF valid after LCLK1 no
84
td(CK1H-SFV) _{longer low}
85
td(CK2L-SFV)
Delay time, SF valid after LCLK2 no
longer high
86
td(CK2L-SFZ)
Delay time, SF in the high-impedance
state after LCLK2 no longer high
87
tsu(ADV-REL)‡
Setup time, row address valid before
RAS no longer high
88
th(ADV-REL)‡
Hold time, row address valid after RAS
low
89
tsu(RCV-CEL)
Setup time, column address valid before
CAS no longer high
90
th(RCV-CEH)
Hold time, column address valid after
CAS high
91
tsu(CAV-CEL)
Setup time, write data valid before CAS
no longer high
92
th(CAV-CEH)
Hold time, write data valid after CAS no
longer low
93
ta(LAV-REL)
Access time, data-in valid after RAS low
(assuming maximum transition time)
94
ta(LAV-CEL)
Access time, data-in valid after CASL no
longer high
95
ta(LAV-RCV)
Access time, data-in valid after column
address valid
‡ _{Parameters 87 and 88 also apply to WE, TR / QE, and SF relative to RAS.}
* This parameter is not production tested.
NOTES: 5. s = tQ if using the clock stretch;
s = 0 otherwise
11. Parameter 96 has been eliminated.
34020A-32
MIN
MAX
3.5
tQ + 12+s
tQ + 12
tQ + 12
tQ + 12
tQ + 15+s
tQ + 15
tQ + 15+s
tQ + 15
tQ + 22
tQ + 22+s
tQ + 22 ^*
2tQ −22
tQ −5+ s
tQ −22
tQ −15
tQ −22
tQ −15
4tQ −8+s
2tQ −8
3tQ −20+s
34020A-40
UNIT
MIN
MAX
3.5
ns
tQ + 10 + s ns
tQ + 10 ns
tQ + 10 ns
tQ + 10 ns
tQ + 13.5 + s ns
tQ + 15 ns
tQ + 13.5 + s ns
tQ + 13.5 ns
tQ + 20 ns
tQ + 20 + s ns
tQ + 20 ^* ns
2tQ − 20
ns
tQ − 5 + s
ns
tQ − 20
ns
tQ − 13.5
ns
tQ − 20
ns
tQ − 13.5
ns
4tQ − 8 + s ns
2tQ −8 ns
3tQ − 12 ns
82
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