gwixp465bad ETC-unknow, gwixp465bad Datasheet - Page 43

• Manufacturer Part Number: gwixp465bad
• Description: Network Proc 1.3v/1.4v/2.5v/3.3v 400mhz 544-pin Bga
• Manufacturer: ETC-unknow

Datasheet—Intel
4.2
Warning:
Table 8.
4.2.1
August 2006
Document Number:
Functional Signal Definitions
The signal definition tables list pull-up and pull-down resistor recommendations when
the particular enabled interface is not being used in the application. These external
resistor requirements are only needed if the particular model of IXP45X/IXP46X
network processors has the particular interface enabled and the interface is not
required in the application.
None of the IXP45X/IXP46X network processors’ I/O pins are 5-V tolerant.
Disabled features within the IXP45X/IXP46X network processors do not require
external resistors, as the processor will have internal pull-up or pull-down resistors
enabled as part of the disabled interface. To determine which interfaces are not enabled
within the IXP45X/IXP46X network processors, see
Table 8
section of the document.
Signal Type Definitions
Pin Description Tables
This section identifies all the signal pins by symbol name, type and description. Names
should follow the following convention, all capital letters with a trailing “_N” indicate a
signal is asserted when driven to a logic low (digital 0). The description includes the full
name of the pin along with a functional description. This section does not specify the
number of power and ground pins required, but does include the number of different
types of power pins required.
®
306261-004US
IXP45X and Intel
Symbol
PWR
GND
VOD
ePU
N/C
TRI
I/O
OD
VO
PD
VB
PE
ID
VI
O
H
1
0
X
Z
I
L
-
presents the legend for interpreting the Type field in the other tables in this
Input pin only
Output pin only
Pin can be either an input or output
Open Drain pin
Power pin
Ground pin
Driven to Vcc
Driven to Vss
Driven to unknown state
Input is disabled
Pulled up to Vcc
Pulled to Vss
Pull-up Disabled
Output Disabled
A valid output level is driven, allowed states - 1, 0, H
Valid level on the signal, allowed states - 1, 0, H, Z
Need to drive a valid input level, allowed states - 1, 0, H,
Z
Valid Open Drain output, allowed states are 0 or Z
Pull-up Enabled, equivalent to H
Output Only/Tristatable
External 10K ohm Pull-Up is required on the board
No Connect
Pin must be connected as described
®
IXP46X Product Line of Network Processors
Description
Intel
®
IXP45X and Intel
Table 1 on page
®
IXP46X Product Line of Network Processors
13.
Datasheet
43