P
R
E
L
I
M
I
N
A
R
Y
I
N
F
O
R
M
A
T
I
O
N
XpressFlow-2020 Series –
Ethernet Switch Chipset
EA218
6+2 Ports 10Mb Ethernet Access Controller
4. AC SPECIFICATION
4.1 XpressFlow Bus Interface:
S_CLK
S12
S1-min
S_CLK
S_D[31:0]
S17
S18
S20
S22
S24
S28
S30
S32
S34
S13
S2-min
S_D[31:0]
S_MSGEN#
S19
S14
S3-min
S_MSGEN#
S_EOF#
S21
S15
S4-min
S_EOF#
S_IRDY
S23
S_IRDY
XpressFlow Bus Interface –
Output float delay timing
S27
S_TABT#
S_CLK
S29
S1-max
S1-min
S_HPREQ#
S_D[31:0]
S31
S2-max
S2-min
S_GNT#
S_MSGEN#
S33
S3-max
S3-min
S_OVLD#
S_EOF#
XpressFlow Bus Interface –
Input setup and hold timing
S4-max
S4-min
S_IRDY
S6-max
S6-min
S_TABT#
S7-max
S7-min
S_HPREQ#
S8-max
S8-min
S_REQ#
XpressFlow Bus Interface –
Output valid delay timing
© 1998 Zarlink Semiconductor, Inc.
21
Rev. 2.1- February, 1999
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
