EA218E Datasheet, PDF (17/28 Pages) Zarlink Semiconductor Inc – EA218E 8-Port Ethernet Access Controller XpressFlow 2020 Ethernet Routing Switch Chipset

PRELIMINARY
XpressFlow-2020 Series –
Ethernet Switch Chipset
INFORMATION
EA218E
8-Port 10Mb Ethernet Access Controller
2.3.2 Bus Cycle Waveforms
S_CLK
S_MSGEN#
S_D[31:0]
S_EOF#
C0
C1 D0 D1 D2 D3 D4
D5 EoF
S_IRDY
S_CLK
XpressFlow Bus Data Transfer Cycle
S_MSGEN#
S_D[31:0]
C0
C1
S_EOF#
C0
C1 EOF
C0
C1
S_TABT#
Command Cycle
Data Xfer w/o Data
Aborted Command
Other XpressFlow Bus Cycles
S_CLK
S_REQ[k]#
S_REQ[j]#
S_HPREQ#
High Priority Request pre-empts the low priority request.
© 1998 Zarlink Semiconductor, Inc.
16
Rev.2.1 – February, 1999