MEA-208 Zarlink Semiconductor, Inc., MEA-208 Datasheet - Page 16

• Manufacturer Part Number: MEA-208
• Description: 6+2 Ports Ethernet Access Controller
• Manufacturer: Zarlink Semiconductor, Inc.

XpressFlow-2020 Series –
Ethernet Switch Chipset
2.3.2 Bus Cycle Waveforms
© 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#
S_IRDY
S_CLK
P
Command Cycle
R
E
High Priority Request pre-empts the low priority request.
C0
L
C0
S_HPREQ#
S_REQ[k]#
I
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
6+2
I
16
D2
N
Ports 10Mb Ethernet Access Controller
F
D3
O
C1
R
D4
EOF
M
A
T
Aborted Command
D5
I
C0
O
EoF
N
Rev. 2.1- February,
C1
EA218