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RIVA128 датащи(PDF) 48 Page - STMicroelectronics

номер детали RIVA128
подробное описание детали  RIVA 128™ 128-BIT 3D MULTIMEDIA ACCELERATOR
PDF  77 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RIVA128 датащи(HTML) 48 Page - STMicroelectronics

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128-BIT 3D MULTIMEDIA ACCELERATOR
RIVA 128
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Table 14.
ROM interface timing parameters
NOTE
1TMCLK is the period of the internal memory clock.
2
This parameter is programmable in the range 0 - 3 MCLK cycles
3
This parameter is programmable in the range 0 - 15 MCLK cycles
Symbol
Parameter
Min.
Max.
Unit
Notes
tBRCS
ROMCS# active pulse width
20TMCLK-5
ns
tBRCA
ROMCS# precharge time
TMCLK-5
ns
tBRV
Read valid to ROMCS# active
TMCLK-5
ns
tBRH
Read hold from ROMCS# inactive
TMCLK-5
ns
tBAS
Address setup to ROMCS# active
TMCLK-5
ns
tBAH
Address hold from ROMCS# inactive
TMCLK-5
ns
tBOS
OE# low from ROMCS# active
ns
2
tBOH
OE# low to ROMCS# inactive
ns
3
tBWS
WE# low from ROMCS# active
ns
2
tBWL
WE# low time
ns
3
tBDBZ
Data bus high-z to ROMCS# active
TMCLK-5
ns
tBDS
Data setup to ROMCS# inactive
10
ns
tBDH
Data hold from ROMCS# inactive
0
ns
tBDZ
Data high-z from ROMCS# inactive
TMCLK-5
ns
tBWDH
Write data hold from ROMCS# inactive
0.5TMCLK-5
ns
tBWDS
ROM write data setup to ROMCS# active
TMCLK-5
ns



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