gwixp425bdt Intel Corporation, gwixp425bdt Datasheet - Page 47
gwixp425bdt
Manufacturer Part Number
gwixp425bdt
Description
Intel Xp42x Product Line Of Network Processors And Ixc1100 Control Plane Processor
Manufacturer
Intel Corporation
Datasheet
1.GWIXP425BDT.pdf
(134 pages)
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Table 16.
Table 17.
Datasheet
GPIO Interface (Sheet 2 of 2)
JTAG Interface
GPIO[13]
GPIO[14]
GPIO[15]
1.
2.
†
1.
2.
†
JTG_TRST_N
Intel
JTG_TMS
JTG_TDO
JTG_TCK
Name
JTG_TDI
Name
®
While PWRON_RESET_N is deasserted use Power On Reset column for the pin state.
After deassertion of PWRON_RESET_N, and deassertion of RESET_IN_N, and assertion of
PLL_LOCK, all signals reflect the value shown in the RESET column.
For a legend of the Type codes, see
While PWRON_RESET_N is deasserted use Power On Reset column for the pin state.
After deassertion of PWRON_RESET_N, and deassertion of RESET_IN_N, and assertion of
PLL_LOCK, all signals reflect the value shown in the RESET column.
For a legend of the Type codes, see
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Reset
Power
On
Z
Z
Z
Reset
Power
Document Number: 252479, Revision: 005
On
1
H
H
H
Z
Z
CLKOU
1
Reset
T/VO
Z
Z
Reset
VI/PE
VI/PE
VI/PE
VO
VI
2
2
Type
I/O
I/O
I/O
Type
†
O
I
I
I
I
General purpose input/output pins. May be configured as an input
or an output. Default after reset is to be configured as inputs.
Should be pulled low using a 10-K: resistor when not being utilized
in the system.
Can be configured similar to GPIO Pin 13 or as a clock output.
Configuration as an output clock can be set at various speeds of up
to 33.33 MHz with various duty cycles. Configured as an input,
upon reset.
Should be pulled low though a 10-K: resistor when not being
utilized in the system.
Can be configured similar to GPIO Pin 13 or as a clock output.
Configuration as an output clock can be set at various speeds of up
to 33.33 MHz with various duty cycles. Configured as an output,
upon reset. Can be used to clock the expansion interface, after
reset.
Should be pulled low though a 10-K: resistor when not being
utilized in the system.
†
Table 5 on page
Table 5 on page
Input data for the IEEE 1149.1 JTAG interface.
Used as the clock for the IEEE 1149.1 JTAG interface.
Test mode select for the IEEE 1149.1 JTAG interface.
Output data for the IEEE 1149.1 JTAG interface.
Used to reset the IEEE 1149.1 JTAG interface.
The JTG_TRST_N signal must be asserted (driven low) during
power-up, otherwise the TAP controller may not be initialized
properly, and the processor may be locked.
When the JTAG interface is not being used, the signal must be
pulled low using a 10-K: resistor.
33.
33.
Description
Description
March 2005
47
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