GCIXP1240AB 837151 Intel, GCIXP1240AB 837151 Datasheet - Page 27

• Manufacturer Part Number: GCIXP1240AB 837151
• Manufacturer: Intel

Specifications of GCIXP1240AB 837151

• Lead Free Status / Rohs Status: Not Compliant

3.2
Datasheet
Table 11. Signal Type Abbreviations
Pin Type Legend
The IXP1240 signals are categorized into one of several groups: Processor Support,
Miscellaneous/Test, IEEE 1149.1, SRAM Interface, SDRAM Interface, IX Bus Interface, General
Purpose, Serial Port, and PCI Interface.
Table 11
I
O
TS
STS
P
OD
Signal Type
defines the signal type abbreviations used in the Pin Description section.
Standard input only. There are three types of inputs (I1,I2, and I3) for the IXP1240. Refer to
Table 35
Standard output only. There are 5 types of outputs (O1,O2,O3,O4, O5) for the IXP1240. Refer
to
Tri-state output.
Sustained tri-state. Active low signal owned and driven by one and only one agent at a time.
The agent that drives this pin low must drive it high for at least one clock before letting it float.
A new agent cannot start driving this signal any sooner than one clock after the previous owner
tri-states it. A pullup is required to sustain the inactive state until another agent drives it, and it
must be provided by the central resource (that is, on a PC board).
Power supply.
Standard open drain allows multiple devices to share as a wire-OR. A pullup is required to
sustain the inactive state until another agent drives it, and it must be provided by the central
resource.
Table 35
and
and
Table 36
Table 36
for more information.
for more information.
Description
Intel
®
IXP1240 Network Processor
27