Ricoh R5C841 - Manual (Page 66)

R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard Data Sheet
12345  2004 R EV . 1.10 5-13
I/O Write
(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#
t9a Setup Time, CADR [25:0] and REG# before
IOWR # Low Tsu-20 ns 1,3
Tsu=2~7Tcyc
Programmable
t9c Hold Time, CADR[25:0], REG# and CE[2:1]#
after IOWR # High Thl-10 ns 1,3
Thl=1~7Tcyc
Programmable
IOWR#
t9b Pulse Duration, IOWR# Low Tpw-20 ns 1,3
Tpw=3~31Tcyc
Programmable
CE[2:1]#
t9h Valid Delay, CADR [25:0] and REG# to CE [2:1]# 1Tcyc-10 ns 1
CDATA [15:0]
t9d Setup Time, CDATA [15:0] before IOWR# Low Tsu-2Tcyc-10 ns 1,3
Tsu=3~7Tcyc
Programmable
t9e Hold Time, CDATA [15:0] after IOWR# High Thl-10 ns 1,3
Thl=1~7Tcyc
Programmable
WAIT#
t9f Hold Time, IOWR# Low after WAIT# High 1Tcyc+0 ns 3
t9g Valid Delay, IOWR# Low to WAIT# Low 50 ns
IOIS16#
t9j Valid Delay, CADR [25:0] and REG# to IOIS16#
Low 50 ns
Note1: Tcyc is PCICLK cycle time. (Typically 30ns)
Note3: Tsu, Tpw, Thl can be programmed by setting 16-bit I/O Timing 0 register.
16-bit Card I/O Write Timing
WAIT#
CDATA
IOWR#
CADR,REG#
t9j t9j
t9f t9g
t9d
t9b
PCICLK
CE1#,CE2#
IOIS16#
t9h
t9e
t9a t9c
16-bit Card I/O Write Timing