NH82801GR S L8FY Intel, NH82801GR S L8FY Datasheet - Page 205

• Manufacturer Part Number: NH82801GR S L8FY
• Manufacturer: Intel

Specifications of NH82801GR S L8FY

• Lead Free Status / RoHS Status: Compliant

Testability
12
12.1
Table 12-1. Complimentary Pins to Drive
12.2
Intel® 3000 and 3010 Chipset Memory Controller Hub (MCH) Datasheet
Testability
In the MCH, testability for Automated Test Equipment (ATE) board level testing has
been implemented as an XOR chain. An XOR-tree is a chain of XOR gates each with one
input pin connected to it.
Complimentary Pins
Table 12-1
testing. The first and third columns contain the pin and its compliment. The second and
fourth columns specify which chain the associated pins are on.
XOR Test Mode Initialization
XOR test mode can be entered by pulling XORTEST (H20) and PRIPRSNT# (C19) low
through the deassertion of external reset (RSTIN#). It was intended that no clocks
should be required to enter this test mode, however, it is recommended that customers
use the following sequence.
On power up, hold PWROK, RSTIN#, and XORTEST (H20) low and start external clocks.
After a few clock cycles, pull PWROK high. After ~3-4 clocks, de-assert RSTIN# (pull it
high). Release XORTEST (H20) and PRIPRSNT#. No external drive. Allow the clocks to
run for an additional 32 clocks. Begin testing the XOR chains. Refer to
Complimentary Pin
SDQS_A0
SDQS_A1
SDQS_A2
SDQS_A3
SDQS_A4
SDQS_A5
SDQS_A6
SDQS_A7
SDQS_A8
SDQS_B0
SDQS_B1
SDQS_B2
SDQS_B3
SDQS_B4
SDQS_B5
SDQS_B6
SDQS_B7
SDQS_B8
contains pins which must remain complimentary while performing XOR
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
Not in XOR Chain
XOR Chain
Complimentary Pin
SDQS_A0#
SDQS_A1#
SDQS_A2#
SDQS_A3#
SDQS_A4#
SDQS_A5#
SDQS_A6#
SDQS_A7#
SDQS_A8#
SDQS_B0#
SDQS_B1#
SDQS_B2#
SDQS_B3#
SDQS_B4#
SDQS_B5#
SDQS_B6#
SDQS_B7#
SDQS_B8#
Figure
XOR Chain
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
5
12-1.
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