- TEXAS INSTRUMENTS DAV Digital Audio/Speaker User's Guide DEM-DAI3010

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

L H 256 f

(initial stting)

H L 384 f

H H 512 f

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

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

(initial setting)

H L 384 f

H H 512 f