Datasheet
Chapter 6 XNOR Test
XNOR continuity tests all signal pins on the Hub (every pin except for NC, XTAL1/CLKIN, XTAL2, ATEST/REG_EN, RBIAS, TEST, Power, and Ground). This functionality is enabled by driving TEST 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.
SMSC USB2502 | 37 | Revision 2.3 |
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