Ricoh R5C841 - Manual (Page 63)

R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
12345  2004 R EV . 1.10 5-10
5.3.3 16-bit PC Card Interface signals
Memory Read
(VCC_ROUT= 1.65~1.95V, VCC_3V=3.0~3.6V, Ta=0~70ºC)
Symbol Parameter Min Max Unit Note
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 0 ns
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