Cirrus-logic CS4361 Manual do Utilizador descarregar pdf (Página 13)

13

CS4361

Confidential Draft

9/30/11

LRCK

SCLK

Left Channel

Right Channel

SDATA +3 +2 +1

LSB

+5 +4

MSB

-1 -2 -3 -4 -5

+3 +2 +1

LSB

+5 +4

MSB

-1 -2 -3 -4

Internal SCLK Mode External SCLK Mode

I²S, 16-Bit data and INT SCLK = 32 Fs if

MCLK/LRCK = 1024, 512, 256, 128, or 64

I²S, Up to 24-Bit data and INT SCLK = 48 Fs if

MCLK/LRCK = 768, 384, 192, or 96

I²S, Up to 24-Bit data and INT SCLK = 72 Fs if

MCLK/LRCK = 1152

I²S, up to 24-Bit Data

Data Valid on Rising Edge of SCLK

Figure 7. CS4361 Data Format (I²S)

LRCK

SCLK

Left Channel

Right Channel

SDATA +3 +2 +1

LSB

+5 +4

MSB

-1 -2 -3 -4 -5

+3 +2 +1

LSB

+5 +4

MSB

-1 -2 -3 -4

Internal SCLK Mode External SCLK Mode

Left-Justified, up to 24-Bit Data

INT SCLK = 64 Fs if

MCLK/LRCK = 1024, 512, 256, 128, or 64

INT SCLK = 48 Fs if

MCLK/LRCK = 768, 384, 192, or 96

INT SCLK = 72 Fs if

MCLK/LRCK = 1152

Left-Justified, up to 24-Bit Data

Data Valid on Rising Edge of SCLK

Figure 8. CS4361 Data Format (Left-Justified)

LRCK

SCLK

Left Channel

SDATA

65432107

23 22 21 20 19 18

65432107

23 22 21 20 19 18

32 clocks

0

Right Channel

Internal SCLK Mode External SCLK Mode

Right-Justified, 24-Bit Data

INT SCLK = 64 Fs if

MCLK/LRCK = 1024, 512, 256, 128, or 64

INT SCLK = 48 Fs if

MCLK/LRCK = 768, 384, 192, or 96

INT SCLK = 72 Fs if

MCLK/LRCK = 1152

Right-Justified, 24-Bit Data

Data Valid on Rising Edge of SCLK

SCLK Must Have at Least 48 Cycles per LRCK Period

Figure 9. CS4361 Data Format (Right-Justified 24)

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

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