CS8422-CNZ Cirrus Logic Inc, CS8422-CNZ Datasheet - Page 49

• Manufacturer Part Number: CS8422-CNZ
• Description: IC SAMPLE RATE CONVERTER 32QFN
• Manufacturer: Cirrus Logic Inc
• Type: Sample Rate Converterr

Specifications of CS8422-CNZ

• Package / Case: 32-QFN
• Applications: Digital Audio
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Mounting Style: SMD/SMT
• Package: 32QFN
• Operating Temperature: -55 to 125 °C
• Audio Control Type: Sample Rate Converter
• Control Interface: I2C, SPI
• Supply Voltage Range: 1.71V To 5.25V
• Operating Temperature Range: -40°C To +85°C
• Audio Ic Case Style: QFN
• No. Of Pins: 32
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1568 - BOARD EVAL FOR CS8422 RCVR
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1732

DS692F1
CHS – Sets which channel's C data is decoded in the Receiver Channel Status register (11h) (Default = ‘0’)
DETCI - D to E status transfer inhibit
DEM_CNTL[2:0] – De-emphasis filter control. See
01 - replace the current audio sample with all zeros (mute).
10 - do not change the received audio sample.
11 - reserved
0 - A channel
1 - B channel
If CHS = 0 and TRUNC = 1, both channels' audio data will be truncated by the AUX[3:0] bits indicated in
the channel A Channel Status data. If CHS = 1 and TRUNC = 1, both channels' audio data will be trun-
cated by the AUX[3:0] bits indicated in the channel B Channel Status data. This will occur even if the
AUX[3:0] bits indicated in the channel A Channel Status data are not equal to the AUX[3:0] bits indicated
in the channel B Channel Status data.
0 -Allow update
1 -Inhibit update
000 - De-emphasis filter off.
001 - 32 kHz setting
010 - 44.1 kHz setting
011 - 48 kHz setting
100 - Auto-detect Sample Rate. If the PLL estimates that the incoming sample rate is below 49 kHz, de-
emphasis will be applied according to the Channel Status data of the incoming AES3 or S/PDIF data. If
the PLL estimates that the incoming sample rate is not below 49 kHz, de-emphasis will not be enabled. If
the incoming Channel Status data indicates that no de-emphasis should be applied, de-emphasis will not
be enabled. If data is detected as being non-audio, the de-emphasis filter will not be enabled.
Figure 25. De-Emphasis Filter Response
-10dB
Gain
0dB
dB
3.183 kHz
T1=50 µs
F1
Figure 25
10.61 kHz
F2
T2 = 15 µs
Frequency
for De-emphasis filter response.
CS8422
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