WM8785GEDSSLASHV datasheet(25/31 Pages) WOLFSON

부품명	WM8785GEDS/V

상세설명	24-Bit, 192kHz Stereo ADC

PDF	31 Pages

Scroll/Zoom	100%

제조업체	WOLFSON [Wolfson Microelectronics plc]

홈페이지	http://www.wolfsonmicro.com

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25 / 31 page

Pre-Production

WM8785

PP Rev 3.0 December 2005

Two registers must be set to enter TDM mode:

•

DEVNO[2:0] sets the number of devices which are on the bus

•

TDM[2:0] allocates a TDM slot to the device

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R1(h01)

Clocking, Sample

Rates,

Oversampling and

Signal Control

7:5

DEVNO[2:0]

000

Number of TDM Devices

000 = 1 Device

001 = 2 Devices

010 = 3 Devices

011 = 4 Devices

Table 7 DEVNO

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R2(h02)

Clocking, Sample

Rates,

Oversampling and

Signal Control

8:6

TDM[2:0]

000

Time Division Multiplexing

Device Select

000 = Device 0 (no delay)

001 = Device 1 (64 BCLK delay)

010 = Device 2 (128 BCLK

delay)

011 = Device 3 (192 BCLK

delay)

Table 8 TDM

Note: When TDM is not required, the register will default to 000 (normal operation)

The figures below indicate TDM mode for I2S and DSP mode A.

Figure 30 TDM Bus I

2S Mode

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