Datasheet

TUSB1105, TUSB1106
www.ti.com SCAS818E –MAY 2006–REVISED SEPTEMBER 2010
FUNCTIONAL DESCRIPTION
Function Selection
Table 2. 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.
Operating Functions
Table 3. 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
Table 4. 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 X X
H L Differential logic 0 J K
L H Differential logic 1 K J
H H Illegal state X X
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