USB2504A View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'USB2504A' PDF : 46 Pages View PDF
Chapter 7 XNOR Test
Integrated USB 2.0 Compatible 4-Port Hub
Datasheet
XNOR continuity tests all signal pins on the Hub (every pin except for NC, XTAL1/CLKIN, XTAL2,
ATEST/REG_EN, RBIAS, TEST1, Power, and Ground). This functionality is enabled by driving TEST1
and CFG_SEL[1] high, driving SCLK low and transition RESET_N from low to high. The output from
the XNOR chain is driven to GR2 . For each pin tested for continuity GR2 should toggle.
Revision 2.3 (08-27-07)
40
DATASHEET
SMSC USB2504/USB2504A
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