Nortel Networks MSC8101 ADS user manual Clkx, Damage to the PM5350 ATM UNI

Models: MSC8101 ADS

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Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

TABLE B1-2. P1 - System Expansion - Interconnect Signals

Pin No.

Signal Name

Attribute

Description

 

 

 

 

 

 

 

 

B21

V3.3

P

3.3V Power Out. These lines are connected to the main 3.3V

 

 

 

plane of the MSC8101ADS, this, to provide 3.3V power where

B22

 

 

 

 

necessary for external tool connected. The amount of current

 

 

 

allowed to be drawn from this power bus is found in TABLE 7-1.

B23

 

 

 

 

"Off-Board Application Maximum Current Consumption" on

 

 

 

B24

 

 

page 66.

 

 

 

 

B25

N.C.

-

Not Connected

 

 

 

 

B26

5V0

P

5V Supply. Connected to ADS’s 5V plane. Provided as power

 

 

 

supply for external tool. For allowed current draw, see TABLE 7-

B27

 

 

 

 

1. "Off-Board Application Maximum Current Consumption"

 

 

 

on page 66.

B28

 

 

 

 

 

 

 

 

 

B29

 

 

 

 

 

 

 

B30

 

 

 

 

 

 

 

B31

 

 

 

 

 

 

 

B32

 

 

 

 

 

 

 

 

 

 

 

C1

GND

P

Digital Ground. Connected to main GND plane of the ADS.

 

 

 

 

C2

CLKX

O

Buffered System Clock. This is a low skew buffered version of the

 

 

 

MSC8101’s CLKOUT signal, to be used by an external tool.

 

 

 

 

C3

GND

P

Digital Ground. Connected to main GND plane of the ADS.

 

 

 

 

C4

BTOLCS1b

O

Buffered Tool Chip Select 1. This is a buffered MSC8101’s CS6~

 

 

 

line, reserved for an external tool.

 

 

 

 

C5

BTOLCS2b

O

Buffered Tool Chip Select 2. This is a buffered MSC8101’s CS7~

 

 

 

line, reserved for an external tool.

 

 

 

 

C6

GND

P

Digital Ground. Connected to main GND plane of the ADS.

 

 

 

 

C7

ATMENb

O

ATM Port Enable. This line enables the ATM port UNI’s output

 

 

 

lines towards the MSC8101. An external tool, using the same pins

 

 

 

as does the ATM port should consult this signal before driving the

 

 

 

same lines. Failure to do so might result in permanent

 

 

 

damage to the PM5350 ATM UNI.

 

 

 

 

C8

ATMRSTb

O

ATM Port Reset.This signal resets the ATM UNI (PM5350). An

 

 

 

external tool may use this signal to its benefit.

 

 

 

 

C9

FETHRSTb

O

Ethernet Port Reset (L). This signal resets the LXT970 Ethernet

 

 

 

transceiver. An external tool may use this signal to its benefit.

 

 

 

 

C10

HRESETb

I/O, O.D.

MSC8101’s Hard Reset. When asserted by an external H/W,

 

 

 

generates Hard-Reset sequence for the MSC8101. During that

 

 

 

sequence, asserted by the MSC8101 for 512 system clocks.

 

 

 

Pulled Up on the ADS using a 1Kresistor.

 

 

 

When driven by an external tool, MUST be driven with an Open

 

 

 

Drain gate. Failure to do so might result in permanent

 

 

 

damage to the MSC8101 and / or to ADS logic.

 

 

 

 

MOTOROLA

MSC8101ADS RevB User’s Manual

B-79

For More Information On This Product,

Go to: www.freescale.com

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Nortel Networks MSC8101 ADS user manual Clkx, Damage to the PM5350 ATM UNI