AT73C260: Multiple Interface USB Transceiver Solutions

Atmel’s AT73C260 is an on-chip USB transceiver that is fully compatible with the USB standard. It is a bidirectional differential interface with three different interfaces: digital, USB2.0 section 7 with or without cable, and IC_USB1.0. The AT73C260 also includes a 3.5V power supply monitor, a low-power bandgap regulator, a 3.3V 70mA linear voltage regulator, and a 1.8V~3.0V 70mA linear voltage regulator SIM FTA. Mainly used in mobile USB UICC (ETSI 102 600), PC USB UICC and Token USB (password and password USB).

AT73C260: Multiple Interface USB Transceiver Solutions
Figure 1 AT73C260 block diagram

Introduction to AT73C260

AT73C260 is an on-chip USB transceiver, which fully complies with the requirements of the Universal Serial Bus specification, specifically, it is compatible with IC_USB1.0. The AT73C260 is a bidirectional differential interface. The AT73C260 is ideal for mobile devices, PCs and Token USB using USB UICC.

The upstream port of the AT73C260 can be connected to 3 different interfaces: digital; USB2.0 section 7 with or without cable; IC_USB1.0.

The downstream port of AT73C260 meets the requirements of IC_USB1.0. Use 3 pins to select the mode of the AT73C260. The downstream port of the AT73C260 is compliant with USB2.0 section 7 when the PVCC is powered by 3.3V and pull-down resistors are added on the PDM and PDP.
AT73C260: Multiple Interface USB Transceiver Solutions
Figure 2 AT73C260 application block diagram: PHY–6 line DAT_SE0 to IC_USB1.0
AT73C260: Multiple Interface USB Transceiver Solutions
Figure 3 AT73C260 application block diagram: 4-wire DAT_SE0 to IC_USB1.0

The AT73C260 also includes a 3.5V power supply monitor, a low power bandgap regulator, a 3.3V 70mA linear voltage regulator, and a 1.8V~3.0V 70mA linear voltage regulator SIM FTA, which meets the requirements of Test 27.17.2.1.

The industrial temperature range of AT73C260 is -40℃~+85℃.

The AT73C260 is packaged in a QFN16 package with an area of ​​3 mm × 3 mm and a grid pitch of 0.5 mm.

AT73C260 main features

• Pin Programmable Mode

• Power supply voltage range: 1.55V~3.6V

• PHY IC_USB1.0 downstream port

• USB2.0 Section 7 to IC_USB1.0 Bridge

• IC_USB1.0 to USB2.0 Section 7 Bridge

• Voltage reference: 3.3V

• 2 70mA LDO voltage regulators

• Quiescent current on each supply is less than 5μA

• Slew rate control to minimize EMI

• ESD 4kV, compliant with USB UICC

Figure 4 Circuit diagram of AT73C260-EK1 evaluation board

AT73C260 application

– Mobile USB UICC (ETSI 102 600), PC USB UICC and Token USB (password password USB)

AT73C260-EK1 Evaluation Kit

The AT73C260-EK1 evaluation kit is designed to easily evaluate the functionality and various on-chip configuration modes of the AT73C260 on-chip USB transceiver.

AT73C260-EK1 Evaluation Kit Key Features

power supply:

On-board resources on the VBUS connector for implementing the host connection:

Type A USB connector

Type B USB connector

– 2 Type AB Micro USB connectors

– UICC interface connector

– Smart Card Reader Connector

– Jumpers on the connector board for FPGA interconnect:

– M<2:0> pad jumpers to configure on-chip connection mode

– PVRE configuration jumper

– Jumpers for pull-up and pull-down resistors on PDP and PDM

– UICC connector configuration jumper

– Load connection jumper on power supply

For more details, please visit:

http://solution.eccn.com/solution_20101101111165471.htm

The Links:   LT104V3-102 LT121S1-153

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