CS4202-JQZR Cirrus Logic Inc, CS4202-JQZR Datasheet - Page 32

• Manufacturer Part Number: CS4202-JQZR
• Description: IC AC97 W/Headphone Amplifier
• Manufacturer: Cirrus Logic Inc
• Type: Audio Codec '97r

Specifications of CS4202-JQZR

• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 90 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.14
SR[15:0]
Default
Writes to the PCM Front DAC Rate Register (Index 2Ch) and the PCM L/R ADC Rate Register (Index 32h) are only
available in Variable Rate PCM Audio mode when the VRA bit in the Extended Audio Status/Control Register
(Index 2Ah) is ‘set’. If VRA = 0, writes to the register are ignored and the register will always read BB80h.
32
SR15 SR14 SR13 SR12 SR11 SR10
D15
Audio Sample Rate Control Registers (Index 2Ch - 32h)
D14
D13
Sample Rate
11,025
16,000
22,050
32,000
44,100
48,000
8,000
(Hz)
playback and capture sample rates. The PCM Front DAC Rate Register (Index 2Ch) controls
the Front Left and Front Right DAC sample rates. The PCM L/R ADC Rate Register
(Index 32h) controls the Left and Right ADC sample rates. There are seven sample rates di-
rectly supported by this register, shown in Table 10. Any value written to this register not con-
tained in Table 10 is not directly supported and will be decoded according to the ranges
indicated in the table. The range boundaries have been chosen so that only bits SR[15:12] of
each register will have to be considered. All register read transactions will reflect the actual
value stored (column 2 in Table 10) and not the one attempted to be written.
Sample Rate Select. The Audio Sample Rate Control Registers (Index 2Ch - 32h) control
BB80h. This value corresponds to 48 kHz sample rate.
D12
Table 10. Directly Supported SRC Sample Rates for the CS4202
D11
content (hex value)
SR[15:0], register
D10
AC44
7D00
BB80
1F40
2B11
3E80
5622
SR9
D9
SR8
D8
SR7
range (hex value)
SR[15:0], decode
D7
B000 - FFFF
8000 - AFFF
0000 - 1FFF
2000 - 2FFF
3000 - 3FFF
4000 - 5FFF
6000 - 7FFF
SR6
D6
SR5
D5
SR4
D4
SR[15:12], decode
range (bin value)
0000 - 0001
0010 - 0010
0100 - 0101
1000 - 1010
0011 - 0011
0110 - 0111
1011 - 1111
SR3
D3
SR2
D2
CS4202
SR1
D1
DS549PP2
SR0
D0