CS4361(2005) 데이터 시트보기 (PDF) - Cirrus Logic

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CS4361
(Rev.:2005)

20-pin, 24-bit, 192 kHz, 6-channel D/A Converter

Cirrus Logic 

CS4361

4.2.2 Internal Serial Clock Mode

In the Internal Serial Clock Mode, the serial clock is internally derived and synchronous with MCLK and LRCK.

The SCLK/LRCK frequency ratio is either 32, 48, 64, or 72 depending upon data format. Operation in this mode

is identical to operation with an external serial clock synchronized with LRCK. This mode allows access to the

digital de-emphasis function. Refer to Figures 7 - 12 for details.

LRCK

Left Channel

Right Channel

SCLK

SDATA

MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB

MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB

Internal SCLK Mode

External SCLK Mode

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

I2S, up to 24-Bit Data

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

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

Data Valid on Rising Edge of SCLK

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

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

MCLK/LRCK = 1152

Figure 7. CS4361 Data Format (I2S)

LRCK

Left Channel

Right Channel

SCLK

SDATA

M SB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LS B

M SB -1 -2 -3 -4 +5 +4 +3 +2 +1 LS B

Internal 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

External SCLK Mode

Left Justified, up to 24-Bit Data

Data Valid on Rising Edge of SCLK

Figure 8. CS4361 Data Format (Left Justified)

DS672A2

13

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