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5 page 
www.ti.com FUNCTIONAL DESCRIPTION Function Selection Operating Functions ADVANCED UNIVERSAL SERIAL BUS TRANSCEIVERS SCAS818C – MAY 2006 – REVISED DECEMBER 2006 FUNCTION TABLE SUSPND OE D+, D– RCV VP, VM FUNCTION L L Driving and receiving Active Active Normal driving (differential receiver active) L H Receiving(1) Active Active Receiving H L Driving Inactive(2) Active Driving during suspend(3) (differential receiver inactive) H H High-Z(1) Inactive(2) Active Low-power state (1) Signal levels on D+ and D– are determined by other USB devices and external pullup/pulldown resistors. (2) In suspend mode (SUSPND = HIGH) the differential receiver is inactive and output RCV is always LOW. Out of suspend (K), signaling is detected via the single-ended receivers VP and VM. (3) During suspend, the slew-rate control circuit of low-speed operation is disabled. The D+ and D– lines are still driven to their intended states, without slew-rate control. This is permitted because driving during suspend is used to signal remote wakeup by driving a K signal (one transition from idle to K state) for a period of 1 ms to 15 ms. FUNCTION TABLES xxx Driving Function (Pin OE = L) Using Single-Ended Input Data Interface for TUSB1105 (Pin MODE = L) DATA STATE FSE0 VO DATA LOW SPEED FULL SPEED L L Differential logic 0 J K L H Differential logic 1 K J H L SE0 X X H H SE0 X X Driving Function (Pin OE = L) Using Differential Input Data Interface for TUSB1105 (Pin MODE = H) and TUSB1106 DATA STATE VMO VPO DATA LOW SPEED FULL SPEED L L SE0 J K L H Differential logic 0 K J H L Differential logic 1 X X H H Illegal state X X 5 |
