NHIXP435AD datasheet(17/24 Pages) INTEL

17 / 24 page

Intel® IXP43X Product Line of Network Processors

December 2008

Specification Update

Order Number: 316847; Revision: 005US

4.0 Non-Intel XScale® Technology Errata Descriptions

condition. In addition, the Ethernet NPE uses internal control state to prevent repetitive

flushing of the MAC Rx Engine FIFO.

Status:

No Fix.

23.

Incorrect Strapping Configuration during Bootup

Problem:

The EX_ADDR[23:0] has a strong pull-up resistor attached internally. During bootup,

the strapping value will be read incorrectly when the EX_ADDR[23:0] is attached to

1K ohm pull-down resistor.

Implication: Incorrect strapping configuration will be read during bootup.

Workaround: A 470 ohm pull-down is required to override the internal pull-up resistor.

Status:

No Fix.

24.

Strong Pull-up Resistor Attached to the JTG_TRST_N

Problem:

The JTG_RST_N has a strong pull-up resistor attached internally. During bootup, the

IEEE 1149.1 JTAG interface is unable to detect a ‘low’ at the JTG_TRST_N pin when it is

attached to a 10K ohm pull-down resistor.

Implication: Intermittent bootup problem.

Workaround: A 100 ohm pull-down is required to override the internal pull-up resistor.

Status:

No Fix.

NHIXP435AD Datenblatt(PDF) 17 Page - Intel Corporation