Cirrus-logic CS4362A Manual do Utilizador descarregar pdf (Página 23)

DS617F2 23

CS4362A

4.3 Digital Interface Formats

The serial port operates as a slave and supports the I²S, Left-justified, and Right-justified digital interface

formats with varying bit depths from 16 to 24 as shown in Figures 7-12. Data is clocked into the DAC on the

rising edge.

LRCK

SCLK

Left Channel

Right Channel

SDINx +3 +2 +1+5 +4

-1 -2 -3 -4 -5

+3 +2 +1+5 +4

-1

-2 -3 -4

MSB LSB MSB LSB

Figure 7. Format 0 - Left-Justified up to 24-bit Data

LRCK

SCLK

Left Channel

Right Channel

SDINx +3 +2 +1+5 +4

-1

-2 -3 -4 -5

+3 +2 +1+5 +4

-1

-2 -3 -4

MSB

LSB LSB

Figure 8. Format 1 - I²S up to 24-bit Data

LRCK

SCLK

Left Channel

Right Channel

SDINx

6543210987

15 14 13 12 11 10

6543210987

15 14 13 12 11 10

32 clocks

Figure 9. Format 2 - Right-Justified 16-bit Data

LRCK

SCLK

Left Channel

SDINx

65432107

23 22 21 20 19 18

65432107

23 22 21 20 19 18

32 clocks

Right Channel

Figure 10. Format 3 - Right-Justified 24-bit Data

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 49 50

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