CS4271 Datasheet, PDF (18/53 Pages) Cirrus Logic – 24-Bit, 192 kHz Stereo Audio CODEC

CS4271
SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT (Logic "0" = GND = 0 V;
Logic "1" = VL, C_L = 20 pF)
Parameter
Symbol Min
Typ
Max
Unit
Sample Rate
Single Speed Mode Fs
4
-
50
kHz
Double Speed Mode Fs
50
-
100
kHz
Quad Speed Mode Fs
100
-
200
kHz
MCLK Specifications
MCLK Frequency
(note 20)
Stand-Alone Mode
Control Port Mode
fmclk
fmclk
1.024
1.024
-
25.600 MHz
-
51.200 MHz
MCLK Input Pulse Width High/Low Stand-Alone Mode tclkhl
16
-
(note 20)
Control Port Mode tclkhl
8
-
-
ns
-
ns
MCLK Output Duty Cycle
45
50
55
%
Master Mode
LRCK Duty Cycle
-
50
-
%
SCLK Duty Cycle
-
50
-
%
SCLK falling to LRCK edge
SCLK falling to SDOUT valid
SDIN valid to SCLK rising setup time
SCLK rising to SDIN hold time
Slave Mode
t_slr
-10
-
t_sdo
0
-
t_sdis
16
-
t_sdih
20
-
10
ns
32
ns
-
ns
-
ns
LRCK Duty Cycle
40
50
60
%
SCLK Period
(note 20)
Single Speed Mode ^t_sclkw
(^---1^---2^---8^1---)^---F----s-
-
-
s
Double Speed Mode ^t_sclkw
---------1-----------
( 128 ) F s
-
-
s
Quad Speed Mode ^t_sclkw
(^---6^---4^--1-)^---F----s-
-
-
s
SCLK Pulse Width High
SCLK Pulse Width Low
SCLK falling to LRCK edge
SCLK falling to SDOUT valid
SDIN valid to SCLK rising setup time
SCLK rising to SDIN hold time
Crystal Oscillator Specifications (XTI/XTO)
Crystal Frequency Range
t_sclkh
30
-
t_sclkl
48
-
t_slr
-10
-
t_sdo
0
-
t_sdis
16
-
t_sdih
20
-
-
ns
-
ns
10
ns
32
ns
-
ns
-
ns
fosc
16.384
-
25.600 MHz
Notes: 20. In Control Port Mode, the Ratio[1:0] bits must be configured according to tables 8 and 9 on
pages 28 and 29.
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DS592F1