參數(shù)資料
型號(hào): SM34020AHTM32
廠(chǎng)商: TEXAS INSTRUMENTS INC
元件分類(lèi): 圖形處理器
英文描述: GRAPHICS PROCESSOR, CQFP132
封裝: CERAMIC, QFP-132
文件頁(yè)數(shù): 77/98頁(yè)
文件大小: 1546K
代理商: SM34020AHTM32
SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D -- APRIL 1991 -- REVISED SEPTEMBER 2004
79
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251--1443
local-bus timing: bus control inputs (see Note 5 and Figure 47)
NO
34020A-32
34020A-40
UNIT
NO.
MIN
MAX
MIN
MAX
UNIT
52
ta(CMV-LAV)
Access time, CAMD valid after address valid on LAD
3tQ--45
3tQ--37
ns
53
th(LA-CMV)
Hold time, CAMD valid after address no longer valid
on LAD
0
ns
54
ta(BCV-ALL)
Access time, control valid (LRDY, PGMD,SIZE16,
BUSFLT) after ALTCH low
3tQ--35+s
3tQ--27+ s
ns
55
th(CK2H-BCV)
Hold time, control (LRDY, PGMD,SIZE16, BUSFLT)
valid after LCLK2 high
0
ns
56
tsu(BCV-CK2H)
Setup time, SIZE16 valid before LCLK2 no longer
low
20
15
ns
CAMD, LRDY, PGMD,SIZE16, and BUSFLT are synchronous inputs. The specified setup, access and hold times must be met for proper device
operation.
NOTE 5: s =tQ if using the clock stretch;
s = 0 otherwise
Address
53
52
54
Valid
LAD
BUSFLT
SIZE16
PGMD
LRDY
ALTCH
CAMD
LCLK2
LCLK1
Q1
Q4
Q3
Q2
Q1
Q4
Q3
Q2
Q1
Q4
Q3
Q2
Q1
Valid
55
56
See clock stretch, page 21.
Figure 47. Local-Bus Timing: Bus Control Inputs
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