MEA-208 Zarlink Semiconductor, Inc., MEA-208 Datasheet - Page 24

• Manufacturer Part Number: MEA-208
• Description: 6+2 Ports Ethernet Access Controller
• Manufacturer: Zarlink Semiconductor, Inc.

XpressFlow-2020 Series –
Ethernet Switch Chipset
4.3 Local Memory Interface:
© 1998 Vertex Networks, Inc.
1999
Symbol
L10
L1
L2
L3
L4
L6
L7
L8
L9
L_D[31:0]
L_D[31:0]
L_CLK
L_CLK
L_D[31:0]# input set-up time
L_D[31:0]# input hold time
L_D[31:0]# output valid delay
L_A[19:2] output valid delay
L_ADSC# output valid delay
L_BWE[3:0]# output valid delay
L_WE# output valid delay
L_OE# output valid delay
L_D[31:0]# output float delay
Input setup and hold timing
Local Memory Interface –
Local Memory Interface –
Output float delay timing
P
R
E
Parameter
L
I
L1
L10
L3-min
M
AC Characteristics – Local Memory Interface
L2
I
N
A
R
Y
Min
(ns)
6.5
3
-40
6+2
I
Max
(ns)
17
17
17
17
17
17
22
24
N
Ports 10Mb Ethernet Access Controller
L_BWE[3:0]#
F
Min
(ns)
5.5
2.5
L_CS[3:0]#
L_ADSC#
L_D[31:0]
L_A[19:2]
O
L_WE#]
-50
L_OE#
L_CLK
Max
(ns)
R
13
13
13
13
13
13
18
M
Local Memory Interface –
Output valid delay timing
Min
(ns)
4
2
A
-66
T
Max
(ns)
10
10
10
10
10
10
14
I
O
C
C
C
C
C
C
L3-min
L4-min
L5-min
L6-min
L7-min
L8-min
L9-min
L
L
L
L
L
L
L3-max
L4-max
L5-max
L6-max
L7-max
L8-max
L9-max
= 30pf
= 30pf
= 30pf
= 30pf
= 10pf
= 10pf
N
Rev. 2.1- February,
Note:
EA218