MT90221 Zarlink Semiconductor, MT90221 Datasheet - Page 99

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

MT90221
90
AC Electrical Characteristics - External Memory Interface Timing - Read Access
System Clock
t
t
t
t
t
t
t
t
t
t
CLK
RC
AVRS
AVRH
CSRS
CSRH
WERS
WERH
RDS
RDH
Item
SR_A[18:0]
SR_D[7:0]
SR_WE
SR_CS
MT90220 System Clock Period
Read Cycle Time
Address Setup Time
Address Hold Time
Chip Select Setup Time
Chip Select Hold Time
Write Enable* Setup Time
Write Enable* Hold Time
Data Setup Time
Data Hold Time
Figure 30 - External Memory Interface Timing - Read Cycle
Description
t
avrs
t
wers
Address Valid
t
csrs
38 ns
3 ns
3 ns
9 ns
3 ns
Min
t
3
clk
t
rc
t
csrh
Data Valid
t
rds
40 ns
30 ns
t
rdh
Typ
1 t
CLK
t
avrh
46 ns
t
Max
9 ns
9 ns
werh
0
-10 ns
.