STG3005A2S STMicroelectronics, STG3005A2S Datasheet - Page 54
STG3005A2S
Manufacturer Part Number
STG3005A2S
Description
128-BIT 3D MULTIMEDIA ACCELERATOR
Manufacturer
STMicroelectronics
Datasheet
1.STG3005A2S.pdf
(85 pages)
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RIVA128ZX
Table 18. ROM interface timing parameters
NOTE
54/85
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
BRCS
BRCA
BRV
BRH
BAS
BAH
BOS
BOH
BWS
BWL
BDBZ
BDS
BDH
BDZ
BWDH
BWDS
1 T
2 This parameter is programmable in the range 0 - 3 MCLK cycles
3 This parameter is programmable in the range 0 - 15 MCLK cycles
MCLK
ROMCS# active pulse width
ROMCS# precharge time
Read valid to ROMCS# active
Read hold from ROMCS# inactive
Address setup to ROMCS# active
Address hold from ROMCS# inactive
OE# low from ROMCS# active
OE# low to ROMCS# inactive
WE# low from ROMCS# active
WE# low time
Data bus high-z to ROMCS# active
Data setup to ROMCS# inactive
Data hold from ROMCS# inactive
Data high-z from ROMCS# inactive
Write data hold from ROMCS# inactive
ROM write data setup to ROMCS# active
is the period of the internal memory clock.
Parameter
0.5T
20T
128-BIT 3D MULTIMEDIA ACCELERATOR
T
T
T
T
T
T
T
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
MCLK
Min.
MCLK
10
MCLK
0
-5
-5
-5
-5
-5
-5
-5
-5
-5
T
MCLK
Max.
-5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
2
3
2
3
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