Data Sheet
USB Audio Controller
SN11220ACF
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3.3 V core operation and 5 V tolerant I/O
Available in 48-pin LQFP (7x7 mm)
System on chip solution: low cost and easy implementation without external
memory
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LED indicator pins for playback and recording mute
4 GPIO pins controlled via USB HID
Claim variable max packet size for saving USB bandwidth; according to
sampling rate under
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HID interrupt interval can be modified via EEPROM
EEPROM content can be read from HID pipe
Transferring length up to each 16 bytes among PC to device and device to PC
by USB HID
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MCU can write particular register address (0x0b) to activate device to upload
update data to PC when MCU has written new data through two wire series bus
interface (section VIII)
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Embedded 5V to 3.3V regulator
Features programmable by jumper pins and EEPROM values
Support voiceband CODEC PCM interface in master/slave operation
A-law and μ-law translation
Sonix Confidential
- 2 -
Do not copy, reproduce, or distribute without permission
2006 Aug 10, V1.01
SONIX [ SONIX TECHNOLOGY COMPANY ]
