ISP1507BBS,118 NXP Semiconductors, ISP1507BBS,118 Datasheet - Page 10

• Manufacturer Part Number: ISP1507BBS,118
• Description: RF Transceiver USB 2.0 ULPI TRNSCVR
• Manufacturer: NXP Semiconductors

Specifications of ISP1507BBS,118

• Number Of Transceivers: 1
• Esd Protection: YeskV
• Power Supply Requirement: Single
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Pin Count: 32
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Compliant
• Other names: 935285495118 ISP1507BBS-T

NXP Semiconductors
ISP1507A_ISP1507B_1
Product data sheet
7.6.2.1 V
7.6.2.2 Session valid comparator
7.6.2.3 Session end comparator
7.6.1 ID detector
7.6.2 V
7.6.3 SRP charge and discharge resistors
The ID detector detects which end of the micro-USB cable is plugged in. The detector
must first be enabled by setting the ID_PULLUP register bit to logic 1. If the ISP1507
senses a value on ID that is different from the previously reported value, an RXCMD
status update will be sent to the USB link, or an interrupt will be asserted.
The ISP1507 provides three comparators, V
comparator and session end comparator, to detect the V
This comparator is used by hosts and A-devices to determine whether the voltage on
V
comparator is V
During power-up, it is expected that the comparator output will be ignored.
The session valid comparator is a TTL-level input that determines when V
enough for a session to start. Peripherals, A-devices and B-devices use this comparator to
detect when a session is started. The A-device also uses this comparator to determine
when a session is completed. The session valid threshold of the ISP1507 is V
with a hysteresis of V
The ISP1507 session end comparator determines when V
session end threshold. The B-device uses this threshold to determine when a session has
ended. The session end threshold of the ISP1507 is V
The ISP1507 provides on-chip resistors for short-term charging and discharging of V
These are used by the B-device to request a session, prompting the A-device to restore
the V
previous session by setting the DISCHRG_VBUS register bit to logic 1 and waiting for
SESS_END to be logic 1. Then the B-device charges V
register bit to logic 1. The A-device sees that V
threshold and starts a session by turning on the V
•
•
•
•
BUS
BUS
BUS
Resistors to temporarily charge and discharge V
Charge pump to provide 5 V power on V
power from the ISP1507 V
If the micro-B end of the cable is plugged in, the ISP1507 will report that ID_GND is
logic 1. The USB link must change to peripheral mode.
If the micro-A end of the cable is plugged in, the ISP1507 will report that ID_GND is
logic 0. The USB link must change to host mode.
BUS
is at a valid level for operation. The ISP1507 minimum threshold for the V
valid comparator
comparators
power. First, the B-device makes sure that V
A_VBUS_VLD
hys(B_SESS_VLD)
Rev. 01 — 19 May 2008
. Any voltage on V
BUS
.
.
BUS
BUS
BUS
ISP1507A; ISP1507B
BUS
. The downstream peripheral can draw its
valid comparator, session valid
below V
BUS
is charged above the session valid
BUS
BUS
power.
B_SESS_END
BUS
. This is required for SRP.
BUS
A_VBUS_VLD
ULPI HS USB OTG transceiver
is fully discharged from the
BUS
by setting the CHRG_VBUS
voltage level.
is below the B-device
.
is considered a fault.
© NXP B.V. 2008. All rights reserved.
BUS
B_SESS_VLD
is high
BUS
valid
9 of 81
BUS
.
,