PM3350-SW datasheet(28/224 Pages) PMC

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ELAN 8X10

PM3350 ELAN 8 X10

DATA SHEET

PMC-970109

ISSUE 3

8 PORT ETHERNET SWITCH

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY

Miscellaneous Inputs and Outputs

Signal Name

Size

Type

Description

VDD5

The 5 volt bias pin must be connected to 5.0 volts for the input and bi-directional

pins to be 5 volt tolerant. This pin may be tied to VDD provided the maximum

static signal level is below VDD + 0.3V.

During power-up, the voltage on the VDD5 pin must be kept equal to or greater

then the voltage on all input pins to avoid damage to the device. In addition, the

voltage on the VDD5 pin is to be kept greater than or equal to the voltage on the

VDD pins.

TST_

Test select signal used for production testing. It must be tied high for correct

operation.

ERST_

Open-drain external reset output. The ERST_ pin is driven low by the ELAN

8x10 to reset other components in the system. This output is asserted for a pre-

set duration (10 milliseconds) upon the detection of a falling edge on the RST_

input, or when the ELAN 8x10 senses a condition requiring a system hardware

reset. It is an open-drain output, and should be pulled up using a 2.2k resistor.

The ERST_ output may be tied directly to the RST_ input to implement a

debounce function in pushbutton reset applications. (Note that the ERST_

output should be left unconnected in host-based applications where the ELAN

8x10 must not be allowed to reset the host CPU.)

DBG[2:0]

I/O

PMC hardware debug pins. These pins are used for hardware debug and

should not be used. These pins should be implemented as no-connects.

PC[10:3]

PMC hardware debug pins. Program counter selected outputs. These pins are

used for hardware debug and should not be used. These pins should be

implemented as no-connects.

Notes on Pin Description:

1. All inputs and bi-directionals present minimal capacitive loading and operate at TTL

logic levels.

2. All digital outputs and bi-directionals have 2 mA D.C. drive capability.

3. Pins MDATA[31:0], MINTR_,RST_, GNT_, TST_ and DBG[2:0] have internal pull-

up resistors.

PM3350-SW Datasheet(PDF) 28 Page - PMC-Sierra, Inc

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