MEA-224 Zarlink Semiconductor, Inc., MEA-224 Datasheet - Page 24

• 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
6.2 CPU Bus Interface:
©
Symbol
1997
P10
P11
P12
P15
P16
P17
P18
P_D[31:0]
P_D[15:0]
P1
P2
P3
P4
P5
P6
P7
P8
P9
P_RDY#
P_CLK
P_CLK
P_INT
Output valid delay timing
Output float delay timing
(57(; (7:25.6
P_RDY# output valid delay
P_INT# output valid delay
P_RST# input setup time
P_RST# input hold time
P_ADS# input set-up time
P_ADS# input hold time
P_W/R# input set-up time
P_W/R# input hold time
P_CS# input set-up time
P_CS# input hold time
P_A[11:1] input set-up time
P_A[11:1] input hold time
P_D[31:0]# input set-up time
P_D[31:0]# input hold time
P_D[31:0]# output float delay
P_D[31:0]# # output valid delay
CPU Bus Interface –
CPU Bus Interface –
P R E L I M I N A R Y
Parameter
AC Characteristics -- CPU Bus Interface
P16-min
P16-min
P17-min
P18-min
P15
P16-max
P17-max
P18-max
4-Port 10/100M Ethernet Access Controller
(ns)
Min
Page: 24
5
2
5
2
5
2
5
2
5
2
5
2
6
6
6
-33
Max
(ns)
15
20
20
20
D A T A
Min
(ns)
4.5
4.5
4.5
4.5
1.5
4.5
1.5
1.5
4.5
1.5
1.5
1.5
P_D[15:0]
P_A[11:1]
5
5
5
P_ADS#
P_RST#
P_W/R#
-40
P_CLK
P_CS#
Input setup and hold timing
Max
(ns)
13
18
18
18
CPU Bus Interface –
S H E E T
(ns)
Min
1.5
1.5
1.5
1.5
1.5
1.5
4
4
4
4
4
4
4
4
4
-50
Max
(ns)
10
15
15
15
Rev. 4.0 –December, 1997
P11
P1
P9
P3
P5
P7
C
C
C
L
L
L
= 60pf
= 60pf
= 20pf
P4
P6
P8
P2
Note:
P10
P12
EA-224