MEA-224 Zarlink Semiconductor, Inc., MEA-224 Datasheet - Page 23

• 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
©
Symbol
1997
S12
S13
S14
S15
S17
S18
S19
S20
S21
S22
S23
S24
S27
S28
S29
S30
S31
S32
S33
S34
S1
S2
S3
S4
S6
S7
S8
(57(; (7:25.6
S_D[31:0] output valid delay
S_MSGEN# output valid delay
S_EOF# output valid delay
S_IRDY output valid delay
S_TABT# output valid delay
S_HPREQ# output valid delay
S_REQ# output valid delay
S_D[31:0] output float delay
S_MSGEN# output float delay
S_EOF# output float delay
S_IRDY output float delay
S_D[31:0] input set-up time
S_D[31:0] input hold time
S_MSGEN# input set-up time
S_MSGEN# input hold time
S_EOF# input set-up time
S_EOF# input hold time
S_IRDY input set-up time
S_IRDY input hold time
S_TABT# input set-up time
S_TABT# input hold time
S_HPREQ# input set-up time
S_HPREQ# input hold time
S_GNT# input set-up time
S_GNT# input hold time
S_OVLD# input set-up time
S_OVLD# input hold time
P R E L I M I N A R Y
AC Characteristics – XpressFlow Bus Interface
Parameter
4-Port 10/100M Ethernet Access Controller
(ns)
Min
Page: 23
6
6
6
6
6
6
6
5
2
5
2
5
2
5
2
5
2
5
2
5
2
5
2
-33
Max
(ns)
20
20
20
20
20
20
20
15
15
15
15
D A T A
Min
(ns)
4.5
1.5
4.5
1.5
4.5
4.5
1.5
4.5
4.5
1.5
4.5
1.5
4.5
1.5
1.5
1.5
5
5
5
5
5
5
5
-40
Max
(ns)
18
18
18
18
18
13
13
13
13
18
18
S H E E T
(ns)
Min
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
-50
Max
(ns)
15
15
10
10
10
10
15
15
15
15
15
Rev. 4.0 –December, 1997
C
C
C
C
C
C
C
L
L
L
L
L
L
L
= 50pf
= 50pf
= 50pf
= 50pf
= 50pf
= 50pf
= 20pf
Note:
EA-224