CM6206 C-MEDIA ELECTRONICS, CM6206 Datasheet - Page 24

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CM6206

Manufacturer Part Number
CM6206
Description
USB Audio I/O Controller
Manufacturer
C-MEDIA ELECTRONICS
Datasheet

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CM6206
High Integrated USB Audio I/O Controller
In codec mode, audio data is applied to the internal DAC filters or output from ADC filters, via the Digital
Audio Interface. 2 popular interface formats are supported: Left Justified mode and I
send the MSB first and note that the DAC filters only support 22-bit.
In left justified mode, the MSB of DIN is sampled by RTKIP0 on the first rising edge of DACBCLK following a
DACLRCK transition. The MSB of the ADC data is output on DOUT and changed on the same falling edge of
ADCBCLK as ADCLRCK and may be sampled on the rising edge of ADCBCLK. ADCLRCK and DACLRCK are high
during the left samples and low during the right samples. The timing diagram is illustrated in Figure 5-16.
The polarity of ADCBCLK/DACBCLK and ADCLRCK/DACLRCK can be inverted by SPI register 01h and 02h.
To meet suspend current specification of USB; CM6206 turns off most blocks when entering suspend. The
only two exceptions are power-on-reset and regulator.
To meet un-configured current specification of USB, CM6206 provides a control signal PDSW to turn off
external components. PDSW would be active when USB host does not configure CM6206. PDSW would also be
active when CM6206 is suspended. If serial EEPROM is exist, notice that it should not be powered off anyway
because it contains Vendor ID and Product ID which should be returned to USB host before CM6206 is
configured.
www.cmedia.com.tw
Copyright © C-Media Electronics Inc.
6.4
6.5
6.6
Audio Interface Format In Codec Mode
Left Justified Mode
Power Management
Figure 6-4. Left Justified Mode Timing Diagram
Rev. 2.1 ︱ Page 24/37
www.DataSheet.co.kr
2
S mode. Both formats
Datasheet pdf - http://www.DataSheet4U.net/

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