CS8420 CIRRUS [Cirrus Logic], CS8420 Datasheet - Page 62

• Manufacturer Part Number: CS8420
• Description: DIGITAL AUDIO SAMPLE RATE CONVERTER
• Manufacturer: CIRRUS [Cirrus Logic]

14.5.1 Pin Description - Hardware Mode 4
Overall Device Control:
DFC0, DFC1 - Data Flow Control Inputs
Audio Input Interface:
SDIN - Serial Audio Input Port Data Input
ISCLK - Serial Audio Input Port Bit Clock Input or Output
ILRCK - Serial Audio Input Port Left/Right Clock Input or Output
APMS - Serial Audio Input Port Master or Slave
Audio Output Interface:
SDOUT - Serial Audio Output Port Data Output
OSCLK - Serial Audio Output Port Bit Clock Input or Output
OLRCK - Serial Audio Output Port Left/Right Clock Input or Output
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DFC0 and DFC1 inputs determine the major data flow options available in hardware mode, according to
Table 3.
Audio data serial input pin. This data will be transmitted out the AES3 port.
Serial bit clock for audio data on the SDIN pin.
Word rate clock for the audio data on the SDIN pin. The frequency will be at the input sample rate (Fsi)
APMS should be connected to VD+ to set serial audio input port as a master, or connected to DGND to
set the port as a slave.
Audio data serial output pin. This is also a start-up option pin, and requires a pull-up or pull-down
resistor.
Serial bit clock for audio data on the SDOUT pin.
Word rate clock for the audio data on the SDOUT pin. The frequency will be at the input sample rate
(Fsi).
CS8420
DS245PP2