Silicon Laboratories SI4734/35-B20 Si4734/35-B20, Rev, Ofall =, Dclk, Left-Justified, Omode =

Si4734/35-B20

(OFALL = 1)	INVERTED
	DCLK
(OFALL = 0)	DCLK
						LEFT CHANNEL
I2S	DFS
(OMODE = 0000)			1 DCLK				n-2
	DOUT	1		2	3			n-1	n
			MSB						LSB

RIGHT CHANNEL

1 DCLK

1	2	3	n-2	n-1	n
MSB					LSB

(OFALL = 1)	INVERTED
	DCLK
(OFALL = 0)	DCLK
	DFS
Left-Justified
(OMODE = 0110)
	DOUT

Figure 10. I2S Digital Audio Format

			LEFT CHANNEL						RIGHT CHANNEL
1	2	3	n-2	n-1	n	1	2	3	n-2	n-1	n
MSB					LSB	MSB					LSB

Figure 11. Left-Justified Digital Audio Format

(OFALL = 0)

DCLK

DFS

DOUT

LEFT CHANNEL

RIGHT

CHANNEL

(OMODE = 1100)

1

2

3

n-2

n-1

n

1

2

3

n-2

n-1

n

(MSB at 1st rising edge)

1 DCLK

MSB

LSB

MSB

LSB

DOUT

LEFT CHANNEL

RIGHT CHANNEL

1

2

3

n-2

n-1

n

1

2

3

n-2

n-1

n

(OMODE = 1000)

(MSB at 2nd rising edge)

MSB

LSB

MSB

LSB

Figure 12. DSP Digital Audio Format

22 Rev. 1.0