Testability
R
Intel
®
82925X/82925XE MCH Datasheet
221
13 Testability
In the 82925X/82925XE 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.
13.1 Complimentary
Pins
Table 13-1 contains pins which must remain complimentary while performing XOR 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.
Note:
In non ECC systems, SDQS_A8, SDQS_A8#, SDQS_B8 and SDQS_B8# do not need to be
driven.
Table 13-1. Complimentary Pins to Drive
Complimentary Pin
XOR Chain
Complimentary Pin
XOR Chain
SDQS_A0
SM XOR 6
SDQS_A0#
SM XOR 4
SDQS_A1
SM XOR 6
SDQS_A1#
SM XOR 4
SDQS_A2
SM XOR 6
SDQS_A2#
SM XOR 4
SDQS_A3
SM XOR 4
SDQS_A3#
SM XOR 6
SDQS_A4
SM XOR 4
SDQS_A4#
SM XOR 2
SDQS_A5
SM XOR 2
SDQS_A5#
SM XOR 4
SDQS_A6
SM XOR 2
SDQS_A6#
SM XOR 4
SDQS_A7
SM XOR 2
SDQS_A7#
SM XOR 4
SDQS_A8 (82925X)
RSV (82925XE)
SM XOR 2
SDQS_A8# (82925X)
RSV (82925XE)
SM XOR 4
SDQS_B0
SM XOR 7
SDQS_B0#
SM XOR 5
SDQS_B1
SM XOR 7
SDQS_B1#
SM XOR 5
SDQS_B2
SM XOR 7
SDQS_B2#
SM XOR 5
SDQS_B3
SM XOR 7
SDQS_B3#
SM XOR 5
SDQS_B4
SM XOR 7
SDQS_B4#
SM XOR 5
SDQS_B5
SM XOR 3
SDQS_B5#
SM XOR 5
SDQS_B6
SM XOR 3
SDQS_B6#
SM XOR 5
SDQS_B7
SM XOR 3
SDQS_B7#
SM XOR 5
SDQS_B8 (82925X)
RSV (82925XE)
SM XOR 7
SDQS_B8# (82925X)
RSV (82925XE)
SM XOR 5
Содержание 82925X
Страница 78: ...Host Bridge DRAM Controller Registers D0 F0 R 78 Intel 82925X 82925XE MCH Datasheet...
Страница 98: ...EPBAR Registers Egress Port Register Summary R 98 Intel 82925X 82925XE MCH Datasheet...
Страница 108: ...DMIBAR Registers Direct Media Interface DMI RCRB R 108 Intel 82925X 82925XE MCH Datasheet...
Страница 156: ...Host PCI Express Graphics Bridge Registers D1 F0 R 156 Intel 82925X 82925XE MCH Datasheet...
Страница 172: ...System Address Map R 172 Intel 82925X 82925XE MCH Datasheet...
Страница 192: ...Electrical Characteristics R 192 Intel 82925X 82925XE MCH Datasheet...
Страница 220: ...Ballout and Package Information R 220 Intel 82925X 82925XE MCH Datasheet Figure 12 3 MCH Package Dimensions MCH...