SC220 ZARLINK [Zarlink Semiconductor Inc], SC220 Datasheet - Page 28

• Manufacturer Part Number: SC220
• Description: XpressFlow 2020 Ethernet Routing Switch Chipset
• Manufacturer: ZARLINK [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
Input setup and hold timing
Local Memory Interface –
Local Memory Interface –
Output float delay timing
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
Local Memory Interface:
P
R
E
Parameter
L
I
L1
L10
L3-min
AC Characteristics – Local Memory Interface
M
L2
I
N
A
R
Y
Min
(ns)
6.5
3
5
5
5
5
5
5
-40
I
Max
(ns)
17
17
17
17
17
17
22
27
N
L_BWE[3:0]#
F
Min
(ns)
5.5
2.5
L_CS[3:0]#
4
4
4
4
4
4
L_ADSC#
L_D[31:0]
L_A[19:2]
O
L_WE#]
-50
L_OE#
L_CLK
Max
(ns)
13
13
13
13
13
13
18
R
Local Memory Interface –
Output valid delay timing
M
Min
(ns)
4
2
3
3
3
3
3
3
A
-66
T
Max
(ns)
10
10
10
10
10
10
14
I
XpressFlow Engine
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. 4.5 – February
Note:
SC220