PM3350 View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM3350' PDF : 224 Pages View PDF
ELAN 8X10
DATA SHEET
PMC-970109
ISSUE 3
PM3350 ELAN 8 X10
8 PORT ETHERNET SWITCH
Miscellaneous Inputs and Outputs
Signal Name Size
VDD5
1
Type
I
Description
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.
TST_
ERST_
DBG[2:0]
PC[10:3]
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.
1
I
Test select signal used for production testing. It must be tied high for correct
operation.
1
OD 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.)
3
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.
8
O 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.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY
26
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