zl50411 Zarlink Semiconductor, zl50411 Datasheet - Page 132

• Manufacturer Part Number: zl50411
• Description: Managed 9-port Fast Ethernet Switch With Private Vlan
• Manufacturer: Zarlink Semiconductor

13.4.3
Read Set up Time
Read Active Time
Read Hold Time
Read Recovery time
Data Valid time
Data Invalid time
P_A[2:0]
P_C S#
P_R D #
P_D ATA
(to C PU )
Read Cycle
Typical CPU Timing Diagram for a CPU Read Cycle
Description
Figure 16 - Typical CPU Timing Diagram for a CPU Read Cycle
Valid tim e
Symbol
T
T
T
T
T
T
T
RS
RS
RA
RH
RR
DV
DI
AD D R 0
T
Activ e Tim e
DV
Table 15 - CPU Read Timing
(SCLK=100 Mhz)
T
Min.
(ns)
RA
10
20
30
Zarlink Semiconductor Inc.
2
D ATA0
ZL50411
T
T
132
Max.
DI
RH
(ns)
12
10
R ecov ery Tim e
Inv alid tim e
T
(SCLK=50 Mhz)
RR
Min.
(ns)
10
40
60
2
T
RS
Max.
(ns)
12
10
AD D R 1
T
Activ e Tim e
DV
T
P_A and P_CS# to falling
edge of P_RD#
At least 2 SCLK cycles
P_A and P_CS# to rising
edge of P_RD#
At least 3 SCLK cycles
P_DATA to falling edge of
P_RD#
P_DATA to rising edge of
P_RD#
RA
D ATA1
Refer to Figure 16
T
T
DI
RH
Data Sheet