isp1102a NXP Semiconductors, isp1102a Datasheet - Page 5

• Manufacturer Part Number: isp1102a
• Description: Isp1102a Advanced Universal Serial Bus Transceiver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
Table 3.
[1]
[2]
ISP1102A_1
Product data sheet
SUSPEND OE_N
LOW
LOW
HIGH
HIGH
Signal levels on the DP and DM pins are determined by other USB devices and external pull-up or pull-down resistors.
In suspend mode (SUSPEND = HIGH), the differential receiver is inactive and output RCV is always LOW. The resume signaling is
detected through single-ended receivers VP/VPO and VM/VMO.
Function selection
LOW
HIGH
LOW
HIGH
7.1 Function selection
7.2 Operating functions
7.3 Power supply configurations
Table 4.
Table 5.
[1]
The ISP1102A can be used with various power supply configurations, which can be
changed dynamically.
Normal mode — V
VREG3V3 are connected.
For the 5 V operation, V
voltage regulator then produces 3.3 V for USB connections.
For the 3.3 V operation, both V
(3.0 V to 3.6 V).
V
the supply voltage of the external circuit.
DP, DM
driving or
receiving
receiving
driving
high-Z
VM/VMO
LOW
LOW
HIGH
HIGH
DP, DM
Differential logic 0
Differential logic 1
SE0
CC(IO)
RCV* denotes the signal level on output RCV just before the SE0 state occurs. This level is stable during
the SE0 period.
[1]
is independently connected to a voltage source (1.65 V to 3.6 V), depending on
[1]
Driving function using differential input data interface (pin OE_N = LOW)
Receiving function (pin OE_N = HIGH)
VP/VPO
LOW
HIGH
LOW
HIGH
RCV
active
active
inactive
inactive
CC(IO)
Rev. 01 — 15 February 2007
Table 7
CC(5V0)
is connected. V
[2]
[2]
provides an overview of the power supply configurations.
VP/VPO
VPO input
VP output
VPO input
VP output
CC(5V0)
is connected to a 5 V source (4.0 V to 5.5 V). The internal
Data
SE0
differential logic 1
differential logic 0
illegal state
RCV
LOW
HIGH
RCV*
and VREG3V3 are connected to a 3.3 V source
CC(5V0)
[1]
VM/VMO
VMO input
VM output
VMO input
VM output
is connected only, or V
VP/VPO
LOW
HIGH
LOW
Function
normal driving (differential
receiver active)
receiving
driving during suspend
(differential receiver inactive)
low-power state
Advanced USB transceiver
ISP1102A
© NXP B.V. 2007. All rights reserved.
CC(5V0)
VM/VMO
HIGH
LOW
LOW
and
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