ISP1301BS ST-Ericsson Inc, ISP1301BS Datasheet - Page 9

• Manufacturer Part Number: ISP1301BS
• Description: IC USB OTG TRANSCEIVER 24-HVQFN
• Manufacturer: ST-Ericsson Inc
• Type: Transceiverr

Specifications of ISP1301BS

• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 2.7 V ~ 4.5 V
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-1166; ISP1301BS,157

Philips Semiconductors
ISP1301_3
Product data sheet
7.4 ID detector
7.5 Pull-up and pull-down resistors
7.6 Analog USB Transceiver (ATX)
7.7 3.3 V DC-DC regulator
7.8 Carkit interrupt detector
In either active or suspended power mode, the ID detector senses the condition of the ID
line and differentiates between the following three conditions:
The ID detector also has a switch that can be used to ground pin ID. This switch is
controlled by bit ID_PULLDOWN in the serial controller.
The pull-up and pull-down resistors include the following switchable resistors:
The pull-up resistor is a context variable as described in the ECN_27%_Resistor
document. The variable pull-up resistor hardware is implemented to meet the USB
ECN_27% specification.
The behavior of the USB transceiver depends on operation mode of the ISP1301:
The built-in 3.3 V DC-DC regulator conditions the supply voltage (V
ISP1301:
The output of the regulator can be monitored on the VREG3V3 pin.
The carkit interrupt detector is a comparator that detects when the DP line is below the
carkit interrupt threshold V
enabled in audio mode only (bit AUDIO_EN = 1).
•
•
•
•
•
•
•
•
•
•
•
Pin ID is floating; bit ID_FLOAT = 1
Pin ID is shorted to ground; bit ID_GND = 1
Pin ID is connected to ground through resistor R
ID_GND = 0
Pin DP pull-up
Pin DP pull-down
Pin DM pull-up
Pin DM pull-down
In USB mode, the USB transceiver block performs USB full-speed or low-speed
transceiver functions. This includes differential driver, differential receiver and
single-ended receivers.
In transparent general purpose buffer mode or UART mode, USB transceiver block
functions as a level shifter between pins DAT/VP and SE0/VM and pins DP and DM.
V
V
CC
CC
= 3.6 V to 4.5 V: the regulator will output 3.3 V
< 3.6 V: the regulator will be bypassed
Rev. 03 — 21 February 2006
PH_CR_INT
(0.4 V to 0.6 V). The carkit interrupt detector is
ACC_ID
10 %
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
; bit ID_FLOAT = 0 and bit
USB OTG transceiver
CC
) for use in the
ISP1301
8 of 51