cs5364 Cirrus Logic, Inc., cs5364 Datasheet - Page 15

• Manufacturer Part Number: cs5364
• Description: 114 Db, 192 Khz, 4-channel A/d Converter
• Manufacturer: Cirrus Logic, Inc.

DS625F3
SERIAL AUDIO INTERFACE - I²S/LJ TIMING
The serial audio port is a three-pin interface consisting of SCLK, LRCK and SDOUT.
Logic "0" = GND = 0 V; Logic "1" = VLS; C
Notes:
Sample Rates
Master Mode
SCLK Frequency
SCLK Period
SCLK Duty Cycle
LRCK setup
LRCK hold
SDOUT setup
SDOUT hold
Slave Mode
SCLK Frequency
SCLK Period
SCLK Duty Cycle
LRCK setup
LRCK hold
SDOUT setup
SDOUT hold
1. Duty cycle of generated SCLK depends on duty cycle of received MCLK as specified under
2. CLKMODE functionality described in
3. In Slave Mode, the SCLK/LRCK ratio can be set according to preference. However, chip performance
Clocking” on page
is guaranteed only when using the ratios in
25.
(Note 3)
(Note 1)
SDOUT
SCLK
LRCK
Parameter
before SCLK rising (VLS = 1.8 V)
before SCLK rising (VLS = 3.3 V)
after SCLK rising (VLS = 1.8 V)
after SCLK rising (VLS = 3.3 V)
before SCLK rising (VLS = 5 V)
after SCLK rising (VLS = 1.8 V)
after SCLK rising (VLS = 3.3 V)
after SCLK rising (VLS = 5 V)
after SCLK rising (VLS = 5 V)
10.
(CLKMODE =
(CLKMODE =
data
channel
Double-Speed Mode
Single-Speed Mode
Quad-Speed Mode
before SCLK rising
before SCLK rising
before SCLK rising
t
HOLD1
after SCLK rising
after SCLK rising
1/(64*216 kHz)
1/(64*216 kHz)
L
= 20 pF, timing threshold is 50% of VLS.
0)(Note 2)
1)(Note 2)
Figure 3. I²S/LJ Timing
Section 4.6.3
t
PERIOD
Section 4.7 Master and Slave Clock Frequencies on page
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PERIOD
SETUP1
SETUP2
PERIOD
SETUP1
SETUP2
SETUP2
SETUP2
t
HOLD1
HOLD2
HOLD2
HOLD2
HOLD1
HOLD2
HOLD2
HOLD2
t
t
t
SET UP2
HIGH
HIGH
HIGH
-
-
-
channel
t
SET UP1
"Master Mode Clock Dividers" on page
data
64*Fs
Min
72.3
72.3
108
54
40
28
20
20
10
20
10
28
20
20
10
10
20
10
2
5
4
5
-
t
HOLD2
t
HIGH
64*Fs
Typ
50
33
-
-
-
-
-
-
-
-
-
64*Fs
Max
108
216
54
60
38
65
-
-
-
-
-
-
-
CS5364
24.
“System
Unit
kHz
Hz
Hz
ns
ns
ns
ns
ns
ns
%
%
%
15