SSM2603 datasheet(24/31 Pages) AD

24 / 31 page

SSM2603

Data Sheet

Rev. D | Page 24 of 31

Mode

PWROFF

CLKOUT

OSC

OUT

DAC

ADC

MIC

LINEIN

AVDD

(3.3 V)

HPVDD

(3.3 V)

DCVDD

(3.3 V)

DBVDD

(3.3 V)

Unit

Sidetone

(Microphone-to-

Line Output)

2.0

2.2

0.2

1.7

Analog Bypass (Line

Input or Line

Output)

2.0

2.2

0.2

1.7

Power-Down

0.001

<0.001

0.03

DIGITAL AUDIO I/F, ADDRESS 0x07

Table 26. Digital Audio I/F Register Bit Map

BCLKINV

LRSWAP

LRP

WL[1:0]

Format[1:0]

Table 27. Descriptions of Digital Audio I/F Register Bits

Bit Name

Description

Settings

BCLKINV

BCLK inversion control

0 = BCLK not inverted (default)

1 = BCLK inverted

Master mode enable

0 = enable slave mode (default)

1 = enable master mode

LRSWAP

Swap DAC data control

0 = output left- and right-channel data as normal (default)

1 = swap left- and right-channel DAC data in audio interface

LRP

Polarity control for clocks in right-justified,

left-justified, and I2S modes

0 = normal PBLRC and RECLRC (default), or DSP Submode 1

1 = invert PBLRC and RECLRC polarity, or DSP Submode 2

WL[1:0]

Data-word length control

00 = 16 bits

01 = 20 bits

10 = 24 bits (default)

11 = 32 bits

Format[1:0]

Digital audio input format control

00 = right justified

01 = left justified

10 = I2S mode (default)

11 = DSP mode

SAMPLING RATE, ADDRESS 0x08

Table 28. Sampling Rate Register Bit Map

CLKODIV2

CLKDIV2

SR[3:0]

BOSR

USB

Table 29. Descriptions of Sampling Rate Register Bits

Bit Name

Description

Settings

CLKODIV2

CLKOUT divider select

0 = CLKOUT is core clock (default)

1 = CLKOUT is core clock divided by 2

CLKDIV2

Core clock divide select

0 = core clock is MCLK (default)

1 = core clock is MCLK divided by 2

SR[3:0]

Clock setting condition

See Table 30 and Table 31.

BOSR

Base oversampling rate

USB mode:

0 = support for 250 fS based clock (default)

1 = support for 272 fS based clock

Normal mode:

0 = support for 256 fS based clock (default)

1 = support for 384 fS based clock

USB

USB mode select

0 = normal mode enable (default)

1 = USB mode enable

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