Data Sheet
USB Audio Controller
SN11220ACF
The figure below shows a complete data transfer. After a STRAT, MCU should send
7-bit slave addres（s 7’b0011100）first, and then the 8th bit denotes a read transfer when
it’s 1 ; or a write transfer when it’s 0.
Note that address 0x0b is the indicator to notice SN11220ACF to update the data
written by MCU to PC via USB HID. Writing any thing to address 0x0b means the
SN11220ACF can transfer all the data to PC. Before address 0x0b be written,
SN11220ACF will transfer the last data which the last indicator launched.
Sonix Confidential
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Do not copy, reproduce, or distribute without permission
2006 Aug 10, V1.01
SONIX [ SONIX TECHNOLOGY COMPANY ]
