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Digital Audio Interface (J51)
2-7
System Interfaces
2.5 Digital Audio Interface (J51)
The digital audio interface contains digital audio signal data (I2S), clocks etc.
Please see the TAS5066 data manual for signal timing and details not ex-
plained in this document.
Table 2−7.J51 Pin Description
Pin Number Net-Name at Schematics Description
1 GND Ground
2 MCLK Master clock input. Low jitter system clock for PWM generation
and reclocking.
Ground connection from source to TAS5066 must be a low im-
pedance connection.
3 GND Ground
4 SDIN1 I2S data 1, channels 1 and 2
5 SDIN2 I2S data 2, channels 3 and 4
6 SDIN3 I2S data 3, channels 5 and 6
7−9 − Reserved
10 GND Ground
11 SCLK I2S bit clock
12 GND Ground
13 LRCLK I2S left-right clock
14 GND Ground
15 − Reserved
16 GND Ground
Table 2−8.Clock Rates
Speed TAS5066 System
Control Register
0 (x02h)
Sample
Frequency
(F
S
)
LRCLK SCLK (64xF
S
) MCLK
Normal speed
MCLK = 256xF
S
D7 = 0
D6 = 0
32 kHz
44.1 kHz
48 kHz
32.0 kHz
44.1 kHz
48.0 kHz
2.0480 MHz
2.8224 MHz
3.0720 MHz
8.1920 MHz
11.2896 MHz
12.2880 MHz
Double speed
MCLK = 256xF
S
D7 = 0
D6 = 1
64 kHz
88 kHz
96 kHz
64.0 kHz
88.2 kHz
96.0 kHz
4.0960 MHz
5.6448 MHz
6.1440 MHz
16.3840 MHz
22.5792 MHz
24.5760 MHz
Quad speed
MCLK = 128xF
S
D7 = 1
D6 = 0
176 kHz
192 kHz
176.4 kHz
192.0 kHz
11.2896 MHz
12.2880 MHz
22.5790 MHz
24.5760 MHz