ISP1507B1HNTM STEricsson, ISP1507B1HNTM Datasheet - Page 9

• Manufacturer Part Number: ISP1507B1HNTM
• Manufacturer: STEricsson

Specifications of ISP1507B1HNTM

• Lead Free Status / RoHS Status: Compliant

CD00269905
Product data sheet
8.4 Voltage regulator
8.5 Crystal oscillator and PLL
8.6 OTG module
For details on controlling resistor settings, see
The ISP1507x1 contains a built-in voltage regulator that conditions the V
inside the ISP1507x1. The voltage regulator:
Remark: The REG1V8 and REG3V3 pins require external decoupling capacitors. For
details, see
The ISP1507x1 has a built-in crystal oscillator and a Phase-Locked Loop (PLL) for clock
generation.
The crystal oscillator takes a sine-wave input from an external crystal on the XTAL1 pin,
and converts it to a square wave clock for internal use. Alternatively, a square wave clock
of the same frequency can also be directly driven into the XTAL1 pin. Using an existing
square wave clock can save the cost of a crystal and also reduce the board size.
The PLL takes the square wave clock from the crystal oscillator, and multiplies or divides it
into various frequencies for internal use.
The PLL produces the following frequencies, irrespective of the clock source:
This module contains several sub-blocks that provide all the functionality required by the
USB OTG specification. Specifically, it provides the following circuits:
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Squelch circuit to detect high-speed bus activity
High-speed disconnect detector
45 Ω high-speed bus terminations on DP and DM for peripheral and host modes
1.5 kΩ pull-up resistor on DP for full-speed peripheral mode
15 kΩ bus terminations on DP and DM for host and OTG modes
Supports input supply range of 3.0 V < V
Supplies internal circuitry with 1.8 V and 3.3 V
60 MHz clock for the ULPI interface controller
1.5 MHz for the low-speed USB data
12 MHz for the full-speed USB data
480 MHz for the high-speed USB data
Other internal frequencies for data conversion and data recovery
The ID detector to sense the ID pin of the micro-USB cable. The ID pin dictates which
device is initially configured as the host and which as the peripheral.
V
detection, SRP, and HNP.
Resistors to temporarily charge and discharge V
BUS
comparators to determine the V
Section
17.
Rev. 03 — 26 July 2010
ISP1507A1; ISP1507B1
BUS
CC
voltage level. This is required for the V
Table
< 3.6 V
BUS
8.
. This is required for SRP.
ULPI HS USB OTG transceiver
© ST-ERICSSON 2010. All rights reserved.
CC
supply for use
9 of 78
BUS