CM6533DH datasheet(28/60 Pages) CMEDIA

28 / 60 page

CM6533,CM6533N,CM6533X1,CM6533DH

USB Audio Chip

Page 28 / 60

www.cmedia.com.tw

Rev.1.6

6.5 Vendor Command Definition

6.5.1 Vendor Command Read

Command Format:

bmRequestType

bRequest

wValue

wIndex

wLength

Data

8’h C3

8’h 02

(Command 2)

16’h -- --

(Start Address of

input Data)

16’h 00 00

16’h 00 –

(<=64 bytes)

Data

Input Data Format:

Byte 0

Data of Reg[wValue]

Byte 1

Data of Reg[wValue + 1]

Byte 2

Data of Reg[wValue + 2]

…

Byte 63

Data of Reg[wValue + 63]

6.5.2 Vendor Command Write

Command Format:

bmRequestType

bRequest

wValue

wIndex

wLength

Data

8’h 43

8’h 01

(Command 1)

16’h -- --

(Start Address of

Output Data)

16’h 00 00

16’h 00 –

(<=64 bytes)

Data

Output Data Format:

Byte 0

Data of Reg[wValue]

Byte 1

Data of Reg[wValue + 1]

Byte 2

Data of Reg[wValue + 2]

…

Byte 63

Data of Reg[wValue + 63]

6.5.3 USB Vendor Requests

bmRequestType

bRequest

wValue

wIndex

wLength

Data

0x43

(Vendor Other)

0x01

Address

0x0000

Data Length

(<=64 bytes)

Data

0xC3

(Vendor Other)

0x02

Address

0x0000

Data Length

(<=64 bytes)

Data

0x43

(Vendor Other)

0x03

Flash Write

Address

0x0000: Write only

0x0001: Auto Verify

Data Length

(<=64 bytes)

Data

0xC3

(Vendor Other)

0x04

Flash Read

Address

0x0000

Data Length

(<=64 bytes)

Data

0x43

(Vendor Other)

0x05

Flash Control

0x0000

0x0001: Chip Erase

0x0000

None

Address

0x0002: Sector

Erase

0xC3

(Vendor Other)

0x06

Flash Control -

Get Status

0x0000

0x0001

1-byte data

0x01: Erasing

0x00: Ready

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