Data Sheet
SN11300
3 In 1 USB Audio Controller
VII. HID bytes arrangement
The SN11300 is equipped with a special feature to let the host software to
communicate with the USB downstream devices via the HID pipes. Using this
feature, the system manufacturers can easily upgrade or increase the functions of
their product by just updating the software installed on the PC. The detail is
described in the HID application note.
VIII. Two-wire serial port definition
To provide extension capability, SN11300 contains a two wire series bus circuitry as
an interface to external MCU. The two wire series bus serves as a slave device with
bit rate up to 400Kbps（fast mode）. External MCU can write 16 bytes to the
SN11300 with 7-bit register address 0x5A. MCU can also read 16 bytes from
SN11300 with 7-bit register address 0x59. The detail is described in the EXT-MCU
application note and EXT-MCU programming guide.
READ :
S
Slave Addr (W) A Pointer A Sr Slave Addr (R) A D0 A D1 A D2 A D3 A D4
A
DD A DE A DF A P
~
NOTE:
1. S : START
2. Sr : Repeated START
3. Slave Addr (W) : Slave Address (Write) = 0xB2
4. Slave Addr (R) : Slave Address (Read) = 0xB3
5. Pointer : Register0 Pointer = 0x00
6. A : Acknowledge
8. D0 ~ DF : Data (Byte0 ~ Byte15)
9. P : STOP
10.
11.
: From Master to SN11300
: From SN11300 to Master
7. A : Not Acknowledge
READ
Sonix Confidential
- 25 -
Do not copy, reproduce, or distribute without permission
2008 Mar 6, V1.3
SONIX [ SONIX TECHNOLOGY COMPANY ]
