CS4811 Cirrus Logic, CS4811 Datasheet - Page 19

• Manufacturer Part Number: CS4811
• Description: Fixed Function Multi-Effects Audio Processor
• Manufacturer: Cirrus Logic

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Voltage Reference
Serial Control Port
Clock and Crystal
DS486PP2
CMOUT - Common Mode Output
CMFILT+,CMFILT- - Common Mode Filter Connections
SPI /I
SCL/CCLK - Serial Control Port Clock
AD0/ CS - I
AD1/CDIN - I
SDA/CDOUT - I
XTI, XTO - Crystal Oscillator Connections (Master Clock)
Output: This pin provides an internally generated reference of 2.3 V to be used for biasing external
analog circuitry. The load on CMOUT must be DC only, with an impedance of not less than 50 kilohms.
Inputs: These pins are connections for external filter components required by the internal common mode
reference circuit. See the typical connection diagram in Figure 3. for details.
Input: This pin configures the control port for I
Output: This pin clocks serial control port data into and out of SDA in I
control port data into CDIN and out of CDOUT.
Input/Output: In I
and is used to select the boot EEPROM.
Input: In I
control port data input and is clocked in on the rising edge of CCLK.
Bidirectional/Output: In I
serial control port data output and is clocked out on the falling edge of CCLK.
Input, Output: These pins provide connections for an external parallel resonant quartz crystal.
Alternately, an external clock source may be applied to XTI. The clock frequency must be 256xFs.
2
C - Serial Control Port Format Select
2
C Address Bit 0 / SPI Chip Select
2
C Address Bit 1 / SPI Data Input
2
C
2
®
C Data / SPI Data Output
mode, AD1 is an input and must be tied to ground. In SPI mode, CDIN is the serial
2
C
®
mode, AD0 is an input and must be tied to ground. In SPI mode, CS is an output
2
C
®
mode, SDA is the bidirectional data I/O line. In SPI mode, CDOUT is the
2
C format if tied to VD or SPI format if tied to DGND.
2
C mode. In SPI mode, it clocks
CS4811
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