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SC220-66 Datasheet(PDF) 6 Page - Zarlink Semiconductor Inc

Part # SC220-66
Description  XpressFlow 2020 Ethernet Routing Switch Chipset
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Manufacturer  ZARLINK [Zarlink Semiconductor Inc]
Direct Link  http://www.zarlink.com
Logo ZARLINK - Zarlink Semiconductor Inc

SC220-66 Datasheet(HTML) 6 Page - Zarlink Semiconductor Inc

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PRELIMINARY
INFORMATION
XpressFlow-2020 Series –
SC220
Ethernet Switch Chipset
XpressFlow Engine
© 1998 Vertex Networks, Inc.
5
Rev. 4.5 – February
1999
Pin No(s).
Symbol
Type
Name & Functions
XpressFlow Bus Interface
185,184,183,182,180,
179,177,176,175,174,
172,171,169,168,167,
166,164,163,160,159,
157,156,154,153,151,
150,149,148,146,145,
143,142
P_D[31:0]
TTL I/O-TS
(5VT)
Management Bus – Data Bit [31:0]
211,210,208,207,205,
204,203,202,201,199,
198
P_A[11:1]
TTL Input
(5VT)
Management Bus – Address Bit [11:1]
196
P_ADS#
TTL Input
(5VT)
Management Bus – Address Strobe
191
P_RWC
TTL Input
(5VT)
Management Bus – Read/Write Control
183
P_RDY#
CMOS Out-
OD
Management Bus – Data Ready
184
P_BS16#
CMOS Out-
OD
Management Bus – 16 bit Data Bus
185
P_CS#
TTL Input
(5VT)
Management Bus – Chip Select
189
P_RSTIN#
TTL In-ST
(5VT)
System RESET Input
190
P_RSTOUT
CMOS Output CPU RESET Output
192
P_INT
CMOS Output Management Bus – Interrupt Request
187
P_CLK
TTL Input
(5VT)
CPU Clock
Control Buffer Memory Interface
60,59,58,57,56,54,53,51,
50,49,48,47,46,45,43,42,
40,39,38,37,36,34,33,30,
29,27,26,25,24,23,22,21,
L_D[31:0]
TTL I/O-TS
Local Memory Bus – Data Bit [31:0]
8,6,5,3,2,1,256,255,254,
253,251,250,248,247,
246,245,244
L_A[18:2]
CMOS Output Local Memory Bus – Address Bit [17:2]
9
L_A[19] /
L_OE[3]#
CMOS Output Local Memory Bus – Address Bit [19:18]
or Memory Read Chip Select [3]
63, 11, 19
L_OE[2:0]#
CMOS Output Local Memory Bus- Read Chip Select
[2:0]
242, 62, 10, 18
L_WE[3:0]#,
CMOS Output Local Memory Bus – Write Chip Select
[3:0]
12,13,14,15
L_BWE[3:0]#
CMOS Output Local Memory Bus – Byte Write Enable
[3:0]
16
L_ADSC#
CMOS Output Local Memory Bus – Controller Address
Status
66
L_CLK
CMOS Output Local Memory Bus – Synchronous Clock


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