CS8421-CNZ Cirrus Logic Inc, CS8421-CNZ Datasheet - Page 14

IC SAMPLE RATE CONVERTER 20QFN

CS8421-CNZ

Manufacturer Part Number
CS8421-CNZ
Description
IC SAMPLE RATE CONVERTER 20QFN
Manufacturer
Cirrus Logic Inc
Type
Sample Rate Converterr
Datasheet

Specifications of CS8421-CNZ

Package / Case
20-QFN
Applications
Digital Audio
Mounting Type
Surface Mount
Operating Supply Voltage
3.3 V / 5.0 V
Operating Temperature Range
- 10 C to + 70 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
598-1018 - BOARD EVAL FOR CS8421
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
598-1730

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CS8421-CNZ
Manufacturer:
CIRRUS
Quantity:
235
14
Master Mode
I/OSCLK Frequency (non-TDM)
OSCLK Frequency (TDM)
I/OLRCK Duty Cycle
I/OSCLK Duty Cycle
I/OSCLK Falling Edge to I/OLRCK Edge
OSCLK Falling Edge to OLRCK Edge (TDM)
OSCLK Falling Edge to SDOUT Output Valid
SDIN/TDM_IN Setup Time Before I/OSCLK Rising Edge
SDIN/TDM_IN Hold Time After I/OSCLK Rising Edge
I/OLRCK
I/OSCLK
I/OSCLK
SDOUT
SDOUT
I/OLRCK
SDIN
(input)
(output)
SDIN
(output)
(output)
(input)
(input)
(input)
(output)
Figure 3. Non-TDM Master Mode Timing
6. After powering up the CS8421, RST should be held low until the power supplies and clocks are settled.
7. The maximum possible sample rate is XTI/128.
8. OLRCK must remain high for at least 8 OSCLK periods in TDM Mode.
9. Only the input or the output serial port can be set as master at a given time.
Figure 1. Non-TDM Slave Mode Timing
t
(Note 9)
lckd
t
lcks
t
dpd
t
dpd
t
lcks
t
ds
t
ds
Parameters
t
dh
t
MSB
MSB
dh
t
sckh
MSB
MSB
t
sckl
MSB-1
MSB-1
MSB-1
MSB-1
TDM_IN
OLRCK
SDOUT
OSCLK
(output)
(output)
(output)
(input)
TDM_IN
OLRCK
OSCLK
SDOUT
(output)
(input)
(input)
(input)
t
fss
t
fss
Figure 4. TDM Master Mode Timing
Figure 2. TDM Slave Mode Timing
Symbol
t
lrckh
t
t
t
lcks
dpd
t
t
fss
ds
dh
t
fsh
t
dpd
t
dpd
Min
45
45
t
3
5
ds
-
-
-
t
ds
256*Fso
64*Fsi/o
t
dh
t
dh
t
sckh
MSB
MSB
MSB
MSB
Max
55
55
5
5
7
-
-
CS8421
t
sckl
DS641F5
MSB-1
MSB-1
MSB-1
MSB-1
Units
MHz
MHz
ns
ns
ns
ns
ns
%
%

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