参数资料
型号: ZL50418/GKC
厂商: ZARLINK SEMICONDUCTOR INC
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA553
封装: 37.50 X 37.50 MM, 2.33 MM HEIGHT, MS-034, HSBGA-553
文件页数: 48/155页
文件大小: 1928K
代理商: ZL50418/GKC
ZL50418
Data Sheet
141
Zarlink Semiconductor Inc.
12.6.3
Typical CPU Timing Diagram for a CPU Read Cycle
Figure 17 - Typical CPU Timing Diagram for a CPU Read Cycle
Description
(SCLK=100 Mhz)
(SCLK=125 Mhz)
Refer to Figure 18
Read Cycle
Symbol
Min.
Max.
Min.
Max.
Read Set up Time
TRS
10
P_A and P_CS# to falling
edge of P_RD#
Read Active Time
TRA
20
16
At least 2 SCLK cycles
Read Hold Time
TRH
2
P_A and P_CS# to rising
edge of P_RD#
Read Recovery time
TRR
30
24
At least 3 SCLK cycles
Data Valid time
TDv
10
P_DATA to falling edge of
P_RD#
Data Invalid time
TDI
6
P_DATA to rising edge of
P_RD#
P_CS#
P_RD#
P_DATA
(toCPU)
P_A[2:0]
T
RR
Recov ery Time
Inv alidtim e
ADD R0
T
RS
T
DV
T
RA
Activ eTim e
Valid tim e
DATA1
DATA0
T
DI
ADD R1
T
RH
T
RS
T
RA
Activ eTim e
T
RH
T
DI
T
DV
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