PI5USB30216D

www.diodes.com

August 2022

Document Number DS44977 Rev 1-2

8

© 2022 Copyright Diodes Incorporated. All Rights Reserved.

PI5USB30216D

Detailed Description using I2C Control

ADDR

ADDR is a tri-level input pin to indicate I2C or pin control (or GPIO) mode. When ADDR pin is floating, the part is set to pin

control mode. When ADDR is set to VDD or GND, I2C mode is enabled, and bit 6 of I2C address is equal to 1 or 0 according to

ADDR set to VDD or GND (see Table 2: I2C Slave Address).

Configuration

The PI5USB30216D requires minimal configuration for proper detection and reporting. Write register 0x02 (Control Register) to

configure different charging profiles and port settings.

Processor Communication

Typical communication steps between the processor and the PI5USB30216D during plug detection are:

1. INTB asserted LOW, indicating changes in register 0x03 (Interrupt Register) or register 0x04 (CC Status Register).

2. Processor reads Interrupt registers to determine which event occurred. Interrupt Register (0x03) indicates if an attach or detach

hi-z again after the clearance of interrupt flags.

3. Processor reads CC Status Register (0x04) to determine plugin details and charging profile. Processor can configure the power

and USB channels according to information in CC Status Register (0x04).

Interrupts

The baseband processor recognizes interrupt signals by observing the INTB signal, which is active LOW. Interrupts are masked

upon bit 0 of Control Register 0x02 (Interrupt Mask Bit). After the Interrupt Mask Bit is cleared by the baseband processor, the

INTB pin is hi-z in preparation for a future interrupt. When an interruptible event occurs, INTB pin transits to LOW and returns

hi-z when the processor reads the Interrupt Register (0x03). Subsequent to the initial power up or reset; if the processor writes a

“1” to Interrupt Mask Bit (bit 0 of Control Register 0x02) when the system is already powered up, INTB pin stays hi-z and ignores

all interrupts until the interrupt mask bit is cleared.

as a device (or dual-role acting as device), VBUS will go to 5V when host attachment is detected. If the port is configured as a

host (or dual-role acting as host), ID pin will pull low when device attachment is detected, and system should assert VBUS.

Port Setting (Host/Device/Dual-Role)

When power is applied to VDD, an internal Power-On Reset (POR) holds the PI5USB30216D in a reset condition until VDD has

initialize to their default states. After power up, the port setting can be changed by I2C writes to [2:1] of Control Register (0x02).

PI5USB30216D connects current sources to CC1 and CC2 when operating in host mode. It will also set the current level

according to the charging current setting. In device mode, PI5USB30216D will connect two integrated resistor Rd1 and Rd2 to

CC1 and CC2 respectively.

Dual-Role & Dual-Role 2 modes enables CC1 and CC2 toggle between host mode and device mode alternatively. The toggling

will stop after connection is made and role negotiated. Dual-Role mode has similar chances to connect as SRC or SNK. Dual-Role

2 with Try.SNK supported has higher chance to connect as SNK and has a longer duty cycle ~65% in device mode. Dual-Role 2

with Try.SRC supported has higher chance to connect as SRC and has a longer duty cycle ~65% in host mode.

Current Mode Setting and Detection

PI5USB30216D can be configured as different current modes per CC1/CC2 setting. Host mode (or dual role acting as Host)

allows the system to configure between High Current Mode (3A), Medium Current Mode (1.5A) and Default Current Mode.

Different current modes can be set by writing Control Register (0x02). When in Device mode (or dual role acting as device),

CC1/CC2 pins allow the system to detect the host charging capability. The charging capability is reported in CC Status Register

(0x04) which can help the system to configure the charging current accordingly.

ID

When PI5USB30216D is configured as host mode (or dual role acting as host), ID pin will be pulled low when a device is attached

to the type-C connector. The ID pin will work as an interrupt signal to acknowledge system when there is device attachment. It

should be noted the ID pin will not be driven low when an audio or debug accessory is detected, and ID pin will always stay Hi-Z

when port is in device mode.

Audio Adapter Accessory and Debug Accessory Mode

PI5USB30216D can detect audio adapter accessory or debug accessory attachment as per CC1/CC2 setting. This is reported in

CC Status Register (0x04) to help system to configure Audio Adapter Accessory Mode or Debug Accessory Mode accordingly.