cs4227 Cirrus Logic, Inc., cs4227 Datasheet - Page 6

• Manufacturer Part Number: cs4227
• Description: Six Channel, 20-bit Codec
• Manufacturer: Cirrus Logic, Inc.

SWITCHING CHARACTERISTICS
Notes: 9. CLKOUT Jitter is for 256x Fs selected as output frequency measured from falling edge to falling edge.
6
Audio ADC’s and DAC’s Sample Rate
XTI Frequency
XTI Pulse Width High
XTI Pulse Width Low
XTI Jitter Tolerance
CLKOUT Jitter
CLKOUT Duty Cycle (high timer/cycle time)
PDN Low Time
SCLK Falling Edge to SDOUT Output Valid
LRCK edge to MSB valid
SDIN Setup Time Before SCLK Rising Edge
SDIN Hold Time After SCLK Rising Edge
Master Mode
SCLK Falling to LRCK Edge
SCLK Period
SCLK Duty Cycle
Slave Mode
SCLK Period
SCLK High Time
SCLK Low Time
SCLK Rising to LRCK Edge
LRCK Edge to SCLK Rising
10. For CLKOUT frequency equal to 1x Fs, 384x Fs, and 512x Fs. See Master Clock Output section.
11. After powering up the CS4227, PDN should be held low for 1 ms to allow the power supply to settle.
12.
13.
14.
Jitter is greater for 384x Fs and 512x Fs as selected output frequency.
---------------------
---------------------
-------------------
384 Fs
128 Fs
256
1
1
1
Fs
+
20
Parameter
XTI = 256, 384, or 512 Fs
XTI = 512 Fs
XTI = 384 Fs
XTI = 256 Fs
XTI = 512 Fs
XTI = 384 Fs
XTI = 256 Fs
(T
DSCK = 0
DSCK = 0
DSCK = 0
DSCK = 0
DSCK = 0
DSCK = 0
(Note 10)
(Note 14)
A
(Note 11)
(Note 9)
= 25 °C; VA+, VD+ = +5 V ±5%; outputs loaded with 30 pF.)
Symbol
t
t
t
t
t
t
t
t
sckw
sckh
lrckd
lrcks
mslr
Fs
t
t
sckl
dpd
lrpd
dh
ds
-
Note 13
1.024
Min
500
10
21
31
10
21
31
40
40
40
20
40
4
-
-
-
-
-
-
-
-
-
Typ
500
200
±10
50
50
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Note 12
Max
50
26
60
40
25
25
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CS4227
DS281PP2
psRMS
MHz
Unit
kHz
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
-