参数资料
型号: RL5C478A
厂商: RICOH COMPANY LTD
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PQFP256
封装: 28 X 28 MM, 1.70 MM HEIGHT, 0.40 MM PITCH, PLASTIC, LQFP-256
文件页数: 25/43页
文件大小: 472K
代理商: RL5C478A
RL5C478A/RB5C478A
PCI-CARDBUS BRIDGE DATA SHEET
RICOH COMPANY, LTD.
12345 1998
REV 2.0
31
4.3.3 16-bit PC Card Interface Signals
Memory Read
( VCC_CORE=3.0~3.6V, VCC_SLOTA/B=3.0~3.6V or 4.75~5.25V, Ta=0~70
°°°°C)
Symbol
Parameter
Min
Max
Unit
Notes
CADR[25:0], REG#, CE[2:1]#
t6a
Setup Time, CADR[25:0], REG#
and CE[2:1]# before OE# Low
Tsu-20
ns
1,2
Tsu=1~7Tcyc
Programmable
t6c
Hold Time, CADR[25:0], REG#
and CE[2:1]# after OE# High
Thl-10
ns
1,2
Thl=1~7Tcyc
Programmable
OE#
t6b
Pulse Duration, OE# Low
Tpw-20
ns
1,2
Tpw=3~31Tcyc
Programmable
CDATA[15:0]
t6d
Hold Time, CDATA[15:0]
after OE# High
0ns
WAIT#
t6e
Hold Time, OE# Low
after WAIT# High
1Tcyc+0
ns
1
t6f
Valid Delay, OE# Low to WAIT#
Low
50
ns
Note1: Tcyc is PCICLK cycle time.( Typically 30ns )
Note2: Tsu, Tpw, Thl can be programmed by setting 16-bit Memory Timing 0 register.
16-bit Card Memory Read Timing
WAIT#
CDATA
OE#
CADR,REG#,
CE1#,CE2#
t6b
Data Latched
t6c
t6e
t6d
Data
t6f
t6a
PCICLK
16-bit Card Memory Read Timing
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