MT90221 Zarlink Semiconductor, MT90221 Datasheet - Page 104

• Manufacturer Part Number: MT90221
• Description: Quad Inverse Multiplexing For Atm (IMA) Device With Flexible Ima And Uni Mode
• Manufacturer: Zarlink Semiconductor

Note 1 - For internal synchronization purposes, 2 system clock cycles are required between a write access and the next valid access.
AC Electrical Characteristics - CPU Interface Intel Timing - Write Cycle
1
2
3
4
5
UP_D[7:0]
UP_A[9:0]
UP_R/W
(WRITE)
UP_CS* set-up time to UP_R/W*
falling edge
Address and Data set up before
rising edge of UP_R/W
UP_AD, UP_CS and Data hold time
after UP_R/W* rising edge
UP_R/W low after rising edge or
UP_CS
UP_CS* high before next UP_CS
low
UP_OE
(READ)
UP_CS
Characteristics
t
ws
Figure 34 - CPU Interface Intel Timing - Write Access
Sym
t
t
t
t
t
ADH
CSH
WS
WH
SU
ADDRESS VALID
DATA VALID
(see Note 1)
Min
t
su
1
4
0
1
2
Typ
t
adh
Max
t
csh
t
wh
system
Units
cycle
clock
ns
ns
ns
ns
Test Conditions
MT90221
95