CDB42438 Cirrus Logic Inc, CDB42438 Datasheet - Page 21

• Manufacturer Part Number: CDB42438
• Description: Eval Bd 108dB 6&8ch Multi-Chnl CODECs
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42438

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42438
• Primary Attributes: 6 Single-Ended and 2 Differential Analog Inputs and 8 Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: Graphic User Interface
• Description/function: Audio CODECs
• Operating Supply Voltage: 5 V to 12 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS42438
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1500

DS646F2
SWITCHING SPECIFICATIONS - ADC/DAC PORT
(Inputs: Logic 0 = DGND, Logic 1 = VLS, ADC_SDOUT C
Notes:
Slave Mode
RST pin Low Pulse Width
MCLK Frequency
MCLK Duty Cycle
Input Sample Rate (FS pin)
SCLK Duty Cycle
SCLK High Time
SCLK Low Time
FS Rising Edge to SCLK Rising Edge
SCLK Rising Edge to FS Falling Edge
DAC_SDIN Setup Time Before SCLK Rising Edge
DAC_SDIN Hold Time After SCLK Rising Edge
DAC_SDIN Hold Time After SCLK Rising Edge
ADC_SDOUT Hold Time After SCLK Rising Edge
ADC_SDOUT Valid Before SCLK Rising Edge
17. After powering up the CS42438, RST should be held low after the power supplies and clocks are settled.
18. See
19. VLS is limited to nominal 2.5 V to 5.0 V operation only.
20. ADC does not meet timing specification for Quad-Speed Mode.
DAC_SDIN
ADC_SDOUT
SCLK
(input)
(input)
FS
Table 7 on page 43
Parameters
t
fss
Double-Speed Mode
Figure 5. TDM Serial Audio Interface Timing
Quad-Speed Mode
for suggested MCLK frequencies.
Single-Speed Mode
t
MSB
fsh
(Note 17)
(Note 18)
(Note 19)
(Note 20)
LOAD
t
ds
= 15 pF.)
t
Symbol
dh2
t
t
t
t
t
sckh
t
t
dval
sckl
t
t
dh1
dh2
F
F
F
fss
fsh
ds
dh
t
sckh
s
s
s
MSB
t
dh1
0.512
Min
t
MSB-1
100
45
50
45
16
10
15
dval
1
4
8
8
5
3
5
5
t
sckl
MSB-1
Max
100
200
50
55
50
55
-
-
-
-
-
-
-
-
-
-
CS42438
Units
MHz
kHz
kHz
kHz
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
21