参数资料
型号: ZL50114GAG2
厂商: XILINX INC
元件分类: 通信及网络
英文描述: SPECIALTY TELECOM CIRCUIT, PBGA552
封装: 35 X 35 MM, 1.27 MM PITCH, LEAD FREE, PLASTIC, MS-034, BGA-552
文件页数: 110/113页
文件大小: 2004K
代理商: ZL50114GAG2
ZL50110/11/12/14
Data Sheet
96
Zarlink Semiconductor Inc.
Figure 41 - Management Interface Timing for Ethernet Port - Write
11.7
External Memory Interface Timing
The timings for the External Memory Interface are based on the requirements of a ZBT-SRAM device, with the
system clock speed at 100 MHz.
Note 1:
Must be capable of driving TWO separate RAM loads simultaneously.
Figure 42 - External RAM Read and Write Timing
Parameter
Symbol
Min.
Typ.
Max.
Units
Notes
RAM_DATA[63:0] Output Valid
Delay
tRDV
1
-
4
ns
Load CL = 30 pF
RAM_RW/RAM_ADDR[19:0]
Delay
tRAV
1
-
4
ns
Load CL = 30 pF
Note 1
RAM_BW[7:0]# Delay
tRBW
1
-
4
ns
Load CL = 30 pF
RAM_DATA[63:0] Setup Time
tRDS
2-
-
ns
RAM_DATA[63:0] Hold Time
tRDH
0.5
-
ns
RAM_PARITY[7:0] Output Valid
Delay
tRPV
1
-
4
ns
Load CL = 30 pF
RAM_PARITY[7:0] Setup Time
tRPS
2-
-
ns
RAM_PARITY[7:0] Hold Time
tRPS
0.5
-
ns
Table 41 - External Memory Timing
tMD
tMP
Mn_MDC
Mn_MDIO
n
Phase 1
Phase 2
Phase 3
Phase 4
Phase 5
Phase 6
Phase 7
Phase 8
A1
A2
A3
A4
A5
A6
A7
A8
BW1
BW2
BW3
BW4
BW5
BW6
BW7
BW8
D(A1)
Q(A2)
Q(A3)
D(A4)
D(A5)
Q(A6)
P(A1)
P(A2)
P(A3)
P(A4)
P(A5)
P(A6)
tRPV
tRDV
tRBW
tRAV
tRPH
tRPS
tRDH
tRDS
tRDH
tRDS
SCLK
RAM_ADDR[19:0]
RAM_RW
RAM_BW[7:0]
RAM_DATA[63:0]
RAM_PARITY[7:0]
A1 - READ
A2 - WRITE
A3 - WRITE
A4 - READ
A5 - READ
A6 - WRITE
A7 - READ
A8 - WRITE
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