MEA-224 Zarlink Semiconductor, Inc., MEA-224 Datasheet - Page 25

• Manufacturer Part Number: MEA-224
• Description: 4-Port, Layer 2 Fast Ethernet Access Controller
• Manufacturer: Zarlink Semiconductor, Inc.

XpressFlow-2001 Series –
Ethernet Switch Chip-set
6.3 Local Memory Interface:
©
Symbol
1997
L10
L1
L2
L3
L4
L5
L6
L7
L8
L9
L_D[31:0]
L_D[31:0]
Input setup and hold timing
L_CLK
L_CLK
Local Memory Interface –
Local Memory Interface –
Output float delay timing
(57(; (7:25.6
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_CS[3:0]# 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
P R E L I M I N A R Y
Parameter
AC Characteristics – Local Memory Interface
L1
L10
L3-min
L2
4-Port 10/100M Ethernet Access Controller
(ns)
Min
Page: 25
5
2
6
6
6
6
6
6
6
-33
Max
(ns)
20
20
20
20
20
20
20
15
D A T A
L_BWE[3:0]#
Min
(ns)
4.5
1.5
L_CS[3:0]#
5
5
5
5
5
5
5
L_ADSC#
L_D[31:0]
L_A[19:2]
-40
L_WE#]
L_OE#
L_CLK
Local Memory Interface –
Output valid delay timing
Max
(ns)
18
18
18
18
18
18
18
13
S H E E T
(ns)
Min
1.5
4
4
4
4
4
4
4
4
-50
Max
(ns)
15
15
15
15
15
10
15
15
Rev. 4.0 –December, 1997
C
C
C
C
C
C
L3-min
L4-min
L5-min
L6-min
L7-min
L8-min
L9-min
L3-max
L4-max
L5-max
L6-max
L7-max
L8-max
L9-max
L
L
L
L
L
L
= 30pf
= 30pf
= 30pf
= 30pf
= 10pf
= 10pf
Note:
EA-224