ISP1105WTS STEricsson, ISP1105WTS Datasheet - Page 8

• Manufacturer Part Number: ISP1105WTS
• Manufacturer: STEricsson

Specifications of ISP1105WTS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

ISP1105_1106_10
Product data sheet
7.3 Power supply configurations
The ISP1105/1106 can be used with different power supply configurations, which can be
changed dynamically. An overview is given in
Normal mode — Both V
5 V operation, V
regulator then produces 3.3 V for the USB connections. For 3.3 V operation, both V
and V
connected to a voltage source (1.65 V to 3.6 V), depending on the supply voltage of the
external circuit.
Disable mode — V
connected. In this mode, the internal circuits of the ISP1105/1106 ensure that the (D+, D−)
pins are in three-state and the power consumption drops to the low-power (suspended)
state level. Some hysteresis is built into the detection of V
Sharing mode — V
mode, the (D+, D−) pins are made three-state and the ISP1105/1106 allows external
signals of up to 3.6 V to share the (D+, D−) lines. The internal circuits of the ISP1105/1106
ensure that virtually no current (maximum 10 μA) is drawn via the (D+, D−) lines. The
power consumption through pin V
Both the VP and VM pins are driven HIGH to indicate this mode. Pin RCV is made LOW.
Some hysteresis is built into the detection of V
Table 8.
[1]
[2]
Table 9.
[1]
Pins
V
V
V
(D+, D−)
(VP, VM)
RCV
Inputs (VO/VPO, FSE0/VMO, SPEED,
MODE
V
Connected
Connected
Not connected
CC(5.0)
CC(I/O)
pu(3.3)
CC(5.0)
High impedance or driven LOW.
ISP1105 only.
High impedance or driven LOW.
reg(3.3)
[2]
/ V
or V
, SUSPND, OE, SOFTCON)
reg(3.3)
Pin states in disable or sharing mode
Power supply configuration overview
reg(3.3)
are connected to a 3.3 V source (3.0 V to 3.6 V). V
CC(5.0)
V
connected
not connected
connected
CC(I/O)
CC(I/O)
Rev. 10 — 28 September 2009
CC(I/O)
is connected to a 5 V source (4.0 V to 5.5 V). The internal voltage
CC(I/O)
is not connected, V
is connected, (V
and V
CC(I/O)
Disable mode state
5 V input / 3.3 V output;
3.3 V input / 3.3 V input
not present
high impedance (off)
high impedance
invalid
invalid
high impedance
CC(5.0)
Configuration
normal mode
disable mode
sharing mode
drops to the low-power (suspended) state level.
[1]
[1]
CC(5.0)
or (V
CC(5.0)
Table
reg(3.3)
CC(5.0)
and V
9.
or (V
lost.
and V
reg(3.3)
CC(5.0)
CC(I/O)
Special characteristics
-
(D+, D−) and V
impedance; VP, VM, RCV:
invalid
(D+, D−) and V
impedance;
VP, VM driven HIGH; RCV driven
LOW
Advanced USB transceivers
reg(3.3)
ISP1105/1106
) are not connected. In this
Sharing mode state
not present
1.65 V to 3.6 V input
high impedance (off)
high impedance
H
L
high impedance
CC(I/O)
[1]
and V
lost.
) are connected. For
© ST-ERICSSON 2009. All rights reserved.
reg(3.3)
is independently
pu(3.3)
pu(3.3)
) are
high
high
CC(5.0)
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