beautypg.com

Texas Instruments DEM-DAI3010 User Manual

Page 12

background image

Setting Functions

1-6

1.4.2

Detailed Explanation of Function Setting Switches and Header Pins

SW001:

Switch to select S/PDIF input connector (optical/coaxial). Selection of the
S/PDIF signal that is routed to the DIR1703 DIN port.

SW002:

Reset switch for the DIR1703 and DIT4096. Pushing this switch resets the
DIR1703 and DIT4096 to the initial state. A reset circuit operates at the time of
power-supply connection, resetting the DIR1703 and DIT4096 automatically.
Therefore, it is not usually necessary to operate this switch.

SW003:

Switch for setting the DIR1703 system clock and output data format

SCF1

SCF0

System Clock

L

L

128 f

S

L

H

256 f

S

(initial stting)

H

L

384 f

S

H

H

512 f

S

FMT1

FMT0

Output Data Format

L

L

16-bit right-justified, MSB-first

L

H

24-bit right-justified, MSB-first

H

L

24-bit left-justified, MSB-first

H

H

24-bit, I

2

S (initial setting)

SW004:

Switch for setting the DIR1703 output clock source

Position

Output Clock (SCK, BCK, LRCK)

X’tal

Crystal clock

PLL

PLL clock

Auto

PLL (PLL locked) / crystal (PLL unlocked)

Note:

When using the DIR1703 as a master clock for the ADC, this switch must be set to X’tal.

When inputting S/PDIF data demodulated by the DIR1703 into the DAC, set this switch to Auto or PLL.

SW005:

Switch for setting the DIT4096 system clock and input data format
Note that the OFF state of this switch sets a HIGH level.

CLK1

CLK0

System Clock

L

L

Not used

L

H

256 f

S

(initial setting)

H

L

384 f

S

H

H

512 f

S