7

A Product Line of

Diodes Incorporated

PI5USB212

April 2024

© 2024 Copyright Diodes Incorporated. All Rights Reserved.

PI5USB212

Document Number DS44950 Rev 5-2

www.diodes.com

I2C Mode

PI5USB212 supports 1MHz down-to-1.2V I2C for device configuration and status readback. This controller is enabled after SCL and

SDA pins are sampled high shortly after de-assertion of RSTN. Otherwise, pin mode is enabled. In I2C mode, the registers can be ac-

cessed by I2C read/write transaction to 7-bit slave address 0x2C.

Address Register Type Reset Value

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

00h

Reserved RW

00000000b Reserved

01h

Control

RW

0000xxxxb

Receiver Equaliza-

tion Level

00 (Lowest)

01

10

11 (Highest)

Boost/Pre-emphasis Level

Receiver Sensitivity

Level

00 (Lowest)

01

10

11 (Highest)

Default value set by

SEN pin sampling

during startup

Coarse

00 (Lowest)

01

10

11 (Highest)

Fine

00 (Lowest)

01

10

11 (Highest)

Default value set by BOOST pin sampling

during startup

02h

Device

ID

R

10110000b Device ID: 10110

Revision: 000

Device Functional Modes

Low Speed (LS) Mode/Full Speed (FS) Mode

PI5USB212 automatically detects a LS/FS connection and does not enable signal compensation. In pin mode, CD pin is asserted high.

High Speed (HS) Mode

PI5USB212 automatically detects a HS connection and will enable signal compensation. In pin mode, CD and HS pins are asserted high.

OTG Mode/B.C.1.2 Mode

PI5USB212 does not enable signal compensation for OTG or B.C.1.2 signals. In pin mode, CD pin is asserted low.

Shutdown Mode

PI5USB212 is disabled when its RSTN pin is asserted low. In shutdown mode the USB channel is still fully operational, but there is

neither signal compensation nor any indication from the CD or HS pin as to the status of the channel.