82443GX Datasheet, PDF (127/128 Pages) Intel Corporation – Intel 440GX AGPset: 82443GX Host Bridge/Controller

Testability
6.3.2 Nand CHAIN B
The NAND chain B test mode is used to test the SBA[7:0] pins. These pins are outputs during the
NAND chain A test mode and are not tested in that mode. In NAND chain B test mode, the
SBA[7:0] signals become inputs and the CRESET# pin becomes the output.
Table 6-6. NAND Chain B Output
Signals
Purpose
CRESET#
NAND CHAIN B0 Output
Table 6-7. NAND Chain B
#
Chain #B0
1
SBA0
2
SBA1
3
SBA2
4
SBA3
5
SBA4
6
SBA6
7
SBA5
8
SBA7
Figure 6-5. NAND Chain B Test Mode
Inputs
NAND Chain B0
82443GX
Vcc
SBA[0]
SBA[1]
Outputs
SBA[7]
CRESET#
test_chb.vsd
82443GX Host Bridge Datasheet
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