Datasheet

TUSB1105, TUSB1106
SCAS818E –MAY 2006–REVISED SEPTEMBER 2010 www.ti.com
Table 1. TERMINAL FUNCTIONS (continued)
TERMINAL
TUSB1105 TUSB1106
I/O DESCRIPTION
PIN NO. PIN NO.
NAME
(1)
RGT RTZ PW RTZ
GND Die pad Die pad 8 6 Ground supply
(2)
Supply voltage for digital I/O pins (1.65 to 3.6 V). When V
CC(I/O)
is not
connected, the D+ and D– pins are in 3-state. This supply pin is
V
CC(I/O)
7 7 9 7
independent of V
CC(5.0)
and V
reg(3.3)
and must never exceed the V
reg(3.3)
voltage.
Speed selection (CMOS level with respect to V
CC(I/O)
). Adjusts the slew rate
of differential data outputs D+ and D– according to the transmission speed.
SPEED 8 8 10 8 I Input pad, push pull, CMOS.
LOW – low speed (1.5 Mbit/s)
HIGH – full speed (12 Mbit/s)
Negative USB data bus connection (analog, differential). For low-speed
D– 9 9 11 9 AI/O
mode, connect to pin V
pu(3.3)
via a 1.5-kΩ resistor.
Positive USB data bus connection (analog, differential). For full-speed
D+ 10 10 12 10 AI/O
mode, connect to pin V
pu(3.3)
via a 1.5-kΩ resistor.
VPO/VO 11 11 I Driver data (CMOS level with respect to V
CC(I/O)
, Schmitt trigger). See
Driving Function Table (pin OE = L) using single-ended input data interface
for TUSB1105 (pin MODE = L), and Driving Function Table (pin OE = L)
VPO 13 11
using differential input data interface for TUSB1105 (pin MODE = H) and
TUSB1106 input pad. Push pull, CMOS.
VMO/FSE0 12 12 I Driver data (CMOS level with respect to V
CC(I/O)
, Schmitt trigger). See
Driving Function Table (pin OE = L) using single-ended input data interface
for TUSB1105 (pin MODE = L), and Driving Function Table (pin OE = L)
VMO 14 12
using differential input data interface for TUSB1105 (pin MODE = H) and
TUSB1106 input pad. Push pull, CMOS.
Internal regulator option. Regulated supply-voltage output (3 V to 3.6 V)
during 5-V operation. A decoupling capacitor of at least 0.1 mF is required
V
reg(3.3)
13 13 15 13
for the regulator bypass option. Used as a supply-voltage input for
3.3 V ± 10% operation.
Internal regulator option. Supply-voltage input (4 V to 5.5 V). Can be
V
CC(5.0)
14 14 16 14 connected directly to USB supply VBUS regulator bypass option. Connect
to V
reg(3.3)
.
Pullup supply voltage (3.3 V ± 10%). Connect an external 1.5-kΩ resistor on
D+ (full speed) or D– (low speed). Pin function is controlled by input
SOFTCON.
V
pu(3.3)
15 15 1 15
SOFTCON = LOW – V
pu(3.3)
floating (high impedance), ensures zero pullup
current
SOFTCON = HIGH – V
pu(3.3)
= 3.3 V, internally connected to V
reg(3.3)
Software-controlled USB connection. A HIGH level applies 3.3 V to pin
V
pu(3.3)
, which is connected to an external 1.5-kΩ pullup resistor. This allows
SOFTCON 16 16 2 16 I
USB connect/disconnect signaling to be controlled by software input pad.
Push pull, CMOS.
(2) TUSB1105 ground terminal is connected to the exposed die pad (heat sink). The package die pad is open on the TUSB1106.
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