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DS00002838B-page 23

UPD301A

4.5.3

PD MAC BIST

The PD MAC incorporates BIST functions as defined in the USB PD Specification. It is comprised of a TX and RX block.

The BIST TX block contains a PRBS (Pseudo Random Binary Sequence) generator, BIST pattern generation logic, and

its own bit-timing logic. The SOP type used by TX BIST Test Frames is a 20-bit static vector which is created by multi-

plexing between the five SOP ordered sets based on a register setting. The resultant 20-bit vector is simply bit selected

when the packet is transmitted.

The BIST RX block contains a PRBS generator and bit error detection logic. BIST RX is used only during the BIST

Receiver Test.

4.6

Supported Power Delivery (PD) Functionality

This section details the UPD301A PD support in firmware. The UPD301A PD functionality operates according to the

USB Power Delivery Specification

. Table 4-6 details the PD parameter values used.

4.6.1

SUPPORTED PD MESSAGES

The following USB PD Control messages are supported:

• GoodCRC

• Accept

• Reject

•Ping

• PS_RDY

• Get_Sink_Cap

• VCONN_Swap

•Wait

• Soft_Reset

The following USB PD Data messages are supported:

• Source_Capabilities

• Request

•BIST

The following USB PD Extended messages are supported:

• Firmware_Update_Request

• Firmware_Update_Response

TABLE 4-6:

USB PD VALUES

Parameter

Value

VendorID

0x0424

ProductID

0x301A

HWVersion

0x01

SiVersion

0x01

FWVersion1...4

Will vary based on latest major and minor revision.

For example. c1.10 is represented by 0x0110 and will be returned as:

• FWVersion1 = 0x0000

• FWVersion2 = 0x0000

• FWVersion3 = 0x0000

• FWVersion4 = 0x0110