MSC220 View Datasheet(PDF) - Zarlink Semiconductor Inc

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Description

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MSC220

XpressFlow 2020 Ethernet Routing Switch Chipset

Zarlink Semiconductor Inc 

PRELIMINARY

XpressFlow-2020 Series –

Ethernet Switch Chipset

1. PIN ASSIGNMENT

1.1 Logic Symbol

INFORMATION

SC220

XpressFlow Engine

L_D[31:0]

L_A[18:2]

L_BWE[3:0]# 4

L_WE[3:0]# 4

L_OE[3:0]# 4

L_ADSC#

L_CLK

P_D[31:0]

P_A[11:1]

P_CS#

P_ADS#

P_RWC

P_RDY#

P_BS16#

P_INT

P_RSTIN#

P_RSTOUT

P_CLK

SC220

Test Pin

T_MODE

C_D[15:0]

C_CE#

C_WE#

C_CM#

C_EC#

C_MF#

C_FF#

S_D[31:0]

S_MSGEN#

S_EOF#

S_IRDY

S_TABT#

S_OVLD#

S_HPREQ#

8 S_REQ[8:1]#

8 S_GNT[8:1]#

S_CLK

Note:

The SC220 is pin compatible to the SC201 with only one exception:

The RSTOUT pin of SC201 is defined as a synchronous RESET output pin which follows the RSTIN input and re-synchronous with

P_CLK for meeting the 80386 timing requirement.

The RSTOUT pin for SC220 has a totally different function. It is no longer related with the RSTIN input. The RSTOUT is a watch-

dog output from SC220 to keep track of the active state of the host processor. Host processor needs to access the Keep

Alive register periodically to prevent the setting of the RSTOUT output. The RSTOUT output can be use as Reset input to

the host processor.

© 1998 Vertex Networks, Inc.

3

1999

Rev. 4.5 – February

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