SC220 ZARLINK [Zarlink Semiconductor Inc], SC220 Datasheet - Page 22

• Manufacturer Part Number: SC220
• Description: XpressFlow 2020 Ethernet Routing Switch Chipset
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

XpressFlow-2020 Series –
Ethernet Switch Chipset
2.4.2
© 1998 Vertex Networks, Inc.
1999
S_MSGEN#
S_MSGEN#
S_D[31:0]
S_TABT#
S_EOF#
S_D[31:0]
S_CLK
S_EOF#
Bus Cycle Waveforms
S_IRDY
S_CLK
P
R
Command Cycle
E
High Priority Request pre-empts the low priority request
C0
L
C0
S_HPREQ#
I
S_REQ[k]#
S_REQ[j]#
M
S_CLK
XpressFlow Bus Data Transfer Cycle
I
C1
Other XpressFlow Bus Cycles
N
C1
A
R
D0
Data Xfer w/o Data
Y
D1
C0
I
21
D2
N
F
D3
O
C1
R
D4
EOF
M
A
T
Aborted Command
D5
I
XpressFlow Engine
C0
O
EoF
N
Rev. 4.5 – February
C1
SC220