STULPI01ATBR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STULPI01ATBR

High speed USB On-The-Go ULPI transceiver

STMicroelectronics 

STULPI01A - STULPI01B

Figure 7. USB 2.0 PHY block diagram

HS

Ser-Des

LS/FS

Ser-Des

45 Ω

HS Disconnect Det.

Squelch Detector

LS/FS SE Receivers

3.3V

1.5kΩ

DP

19.25kΩ

3.3V

1.5kΩ

DN

19.25kΩ

Block description

6.12

Power saving features

To reduce power consumption STULPI01 implements 2 low power modes of operation.

1. Low power mode, which is defined in ULPI specification.

2. Power-down mode to save more power in case USB function is not needed.

More information on these modes can be found in following paragraph:

6.13

6.13.1

6.13.2

6.13.3

Modes of operation

ULPI synchronous mode

STULPI01 transceiver supports SDR mode operation (12 pin interface). The selection of

SDR mode is performed during startup reset procedure.

6 pin FS/LS serial mode

This mode is entered by writing to corresponding bit in the Interface Control register.

3 pin FS/LS serial mode

This mode is entered by writing to corresponding bit in the Interface Control register.

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