SC220 ZARLINK [Zarlink Semiconductor Inc], SC220 Datasheet - Page 20

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

XpressFlow-2020 Series –
Ethernet Switch Chipset
© 1998 Vertex Networks, Inc.
1999
Register Description
Buffers & Stacks Management (Continue)
Queue Management
CAM Interface
HISC Control
SCBBA Switch Control Buffer – Base Address
SCBA
SCBAG Switch Control Buffer – Buffer Aging Status
SCBSA Switch Ctrl Buffer Stack – Base Address
SCBSL
SCBST Switch Ctrl Buffer Stack – Buffer Low Threshold hCA0
SCBSS Switch Ctrl Buffer Stack – Allocation Status
MCTA
MCTR
MCTSA MAC Ctrl Table Stack – Base Address
MCTSS MAC Ctrl Table Stack – Allocation Status
QSBA
MFTA
CINQ
COTQ
CSQ0
CSQ1
CSQ2
CCWR
CSRL
CSRH
HPCR
HMCL
HPRC
Switch Control Buffers
MAC Control Tables
P
Switch Control Buffer – Buffer Allocation
Switch Ctrl Buffer Stack – Size Limit
MAC Control Table – Table Allocation
MAC Control Table – Table Release
Queue Structure – Base Address
Multicast Frame Table – Base Address
CPU Input Queue
CPU Output Queue
CPU Status Queue – 1
CPU Status Queue – 2
CPU Status Queue – 3
CAM Command/Data Write Register
CAM Status/Data Read Register Low
CAM Status/Data Read Register High
HISC Processor Control Register
HISC Micro-Code Loading Port
HISC Priority Control Register
R
E
L
I
M
I
N
st
nd
rd
A
D-word
D-word
D-word
R
Y
I
19
N
F
O
Endian
hC00
hC20
hC30
hC80
hC90
hCB0
hBB0
hAA8
hAB8
hB20
hB20
hB80
hA00
hA10
hA88
hA88
hA98
h9B0
h908
h928
h938
h980
h998
Little
R
I/O Offset
M
Endian
hCA2
hCB2
hBB2
hAA8
hAB8
A
hC02
hC22
hC32
hC82
hC92
hB22
hB22
hB82
hA02
hA12
hA88
hA88
hA98
h9B2
h908
h928
h938
h982
h998
Big
T
I
XpressFlow Engine
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
16-bit
32-bit
32-bit
32-bit
32-bit
32-bit
32-bit
32-bit
32-bit
16-bit
32-bit
16-bit
Size
Reg.
O
N
Rev. 4.5 – February
W/R
W/R
W/R
W/R
W/R
W/R
W/R
W/R
W/--
W/--
W/R
W/R
W/R
--/R
--/R
--/R
--/R
W/-
--/R
--/R
--/R
--/R
--/R
--/R
--/R
SC220
Note: