Datasheet

TUSB1211

SLLSE80A –MARCH 2011– REVISED JANUARY 2012

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1.1 Description

The TUSB1211 is a USB2.0 transceiver chip, designed to interface with a USB controller via a ULPI

interface. It supports all USB2.0 data rates (High-Speed 480Mbps, Full-Speed 12 Mbps and Low-Speed

1.5Mbps), and is compliant to both Host and Peripheral modes. It additionally supports a UART mode and

legacy ULPI serial modes.

TUSB1211 also supports USB Battery Charging Specification Ver1.1. integrating a charger detection

module for sensing and control on DP/DM lines, and ACA (Accessory Charger Adapter) detection and

control on ID line. ACA allows simultaneous connection of a USB Charger or Charging Downstream Port

and an Accessory to a portable OTG device. Configuration bits allow an ACA-agnostic legacy link to

correctly communicate with the connected accessory Port through the ACA.

TUSB1211 also supports the OTG (Ver1.3) optional addendum to the USB2.0 specification, including Host

Negotiation Protocol (HNP) and Session Request Protocol (SRP).

TUSB1211 is optimized to be interfaced through a 12-pin SDR UTMI Low Pin Interface (ULPI), supporting

both input clock and output clock modes, with 1.8 V interface supply voltage.

TUSB1211 integrates a 3.3 V LDO, which makes it flexible to work with either battery operated systems or

pure 3.3 V supplied systems. Both the main supply and the 3.3 V power domain can be supplied through

an external switched-mode converter for optimized power efficiency.

TUSB1211 includes a POR circuit to detect supply presence on V

BAT

and V

DDIO

pins. TUSB1211 can be

disabled or configured in low power mode for energy saving.

TUSB1211 is protected against accidental shorts to 5 V or ground on its exposed interface (DP/DM/ID). It

is also protected against up to 20 V surges on V

BUS

TUSB1211 integrates a high-performance low-jitter 480 MHz PLL and supports two clock configurations.

Depending on the required link configuration, TUSB1211 supports both ULPI input and output clock

mode : input clock mode, in which case a square-wave 60 MHz clock is provided to TUSB1211 at the

ULPI interface CLOCK pin; and output clock mode in which case TUSB1211 can accept a square-wave

reference clock at REFCLK of either 19.2 MHz, 26 MHz. Frequency is indicated to TUSB1211 via the

configuration pin CFG. This can be useful if a reference clock is already available in the system.

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Product Folder Link(s): TUSB1211