CM6533-N Datasheet, PDF (16/60 Pages) C-Media Electronics – USB 2.0 Full-Speed compliant

CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
4
I2C_SCLK
2
PDSW
3
TEST
2-wire serial clock,
DIO 3.3V I/O, 5V tolerant, bidirectional buffer with 8mA driving current, Default
weak pull-up for input.
Miscellaneous
Power Down Switch is an output buffer with 8mA Tri-state output.
DO Normal mode: 0
Suspend mode: 1
The TEST pin is used for IC test, another one is in the situation when F/W
was crash or USB was not recognized, Set TEST pin to 3.3V before USB
DI
connect can force MCU into boot loader mode and able to update F/W via
configuration tool, Default weak pull-down for input.
1: Boot loader mode
0 or floating: Normal operation
**Note: GPIOs, I2C, SPI, SPDIF, MIC_SWOUT, MICL, MICR_RING2, MBIASL, MBIASR_SLEEVE, VAG, LOUTL, LOCOM, LOUTR,
VOLADJ, PDSW, TEST pins can be left floating if not in use.
Page 16 / 60
Rev.1.6
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