CDB4398 Cirrus Logic Inc, CDB4398 Datasheet - Page 30

• Manufacturer Part Number: CDB4398
• Description: BOARD EVAL FOR CS4398 DAC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4398

• Number Of Dac's: 2
• Number Of Bits: 24
• Outputs And Type: 2, Differential
• Sampling Rate (per Second): 192k
• Data Interface: I²C, SPI™
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 70°C
• Utilized Ic / Part: CS4398
• Description/function: Audio D/A
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS4398
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1155

30
7.2.3
7.2.4
7.3
VOLB=A
0
7
Default = 0
00 - No De-emphasis
01 - 44.1 kHz De-emphasis
10 - 48 kHz De-emphasis
11 - 32 kHz De-emphasis
Function:
Selects the appropriate digital filter to maintain the stan-
dard 15 µs/50 µs digital de-emphasis filter response at 32,
44.1 or 48 kHz sample rates. (see Figure 17)
Notes: De-emphasis is only available in Single-Speed
Default = 00
00 - Single-Speed Mode (30 to 50 kHz sample rates)
01 - Double-Speed Mode (50 to 100 kHz sample rates)
10 - Quad-Speed Mode (100 to 200 kHz sample rates)
11 - Direct Stream Digital Mode
Function:
Selects the required range of input sample rates or DSD Mode.
Volume Mixing and Inversion Control - Register 03h
DSD Mode: The relationship between the oversampling ratio of the DSD audio data and the required
Master Clock to DSD data rate is defined by the Digital Interface Format pins.
De-emphasis Control (DEM1:0) BITs 3-2
Functional Mode (FM1:0) BITs 1-0
DIF2
0
0
0
0
1
1
1
1
INVERT A
Mode.
6
0
DIF1
0
0
1
1
0
0
1
1
INVERT B
DIF0
0
1
0
1
0
1
0
1
5
0
64x oversampled DSD data with a 4x MCLK to DSD data rate (Default)
64x oversampled DSD data with a 6x MCLK to DSD data rate
64x oversampled DSD data with a 8x MCLK to DSD data rate
64x oversampled DSD data with a 12x MCLK to DSD data rate
128x oversampled DSD data with a 2x MCLK to DSD data rate
128x oversampled DSD data with a 3x MCLK to DSD data rate
128x oversampled DSD data with a 4x MCLK to DSD data rate
128x oversampled DSD data with a 6x MCLK to DSD data rate
Table 6. Digital Interface Formats - DSD Mode
ATAPI4
0
4
ATAPI3
.
3
1
-10dB
Gain
0dB
Description
dB
ATAPI2
Figure 17. De-Emphasis Curve
2
0
3.183 kHz
T1=50 µs
F1
ATAPI1
0
1
10.61 kHz
F2
CS4398
T2 = 15 µs
ATAPI0
DS568F1
Frequency
0
1