Power Supply Connections; Dai Motherboard Controls; Switch Settings; Jumper Selections - Texas Instruments DEM-DAI3008 User Manual

SLEU006
3.1.2

Power Supply Connections

The PCM3008 daughterboard can accept power from either of two sources. Either 2.4 V supplied via
CN-1 powers the board directly, or an onboard 2.5-V regulator powers the PCM3008 using a 5-V source.
The 5-V power comes from the 5-V supply on the DAI motherboard via connector CN-2. Power source
selection is accomplished by the use of jumper JP1.
3.2

DAI Motherboard Controls

3.2.1

Switch Settings

Selection of the audio output interface format for the DAI receiver is controlled by SW3, SW2, and SW1.
SW3(M2)
L
L
H
H
NOTE: JP6 must be connected INV when 16–24-bit, left-justified is selected.
Selection of the audio input interface format for the DAI transmitter is controlled by SW4, SW5, and SW6.
SW4(M2)
L
H
H
H
mode
The operating
FC0 on SW9.
PRO: H = Consumer mode, L = Professional mode
FC1: Channel status bit 24 in consumer mode
FC0: Channel status bit 25 in consumer mode
The remaining switches on SW9 are labelled C2, C3, C8, C9, and C15. They are used for the selection of
channel status bits from the CS8404, and correspond to channel status bits 2, 3, 8, 9, and 15,
respectively.
SW7 is the master/slave selection switch. It must be set to slave for proper operation the DAC and codec
of the PCM3008.
3.2.2

Jumper Selections

JP1 selects the system clock source.
XTAL: Sysem clock generated by onboard XTAL oscillator module
NML: System clock generated by DAI receiver
INV: Inverted system clock generated by DAI receiver
4 DEM-DAI3008 PCM3008 Evaluation Board
JP-1 Setting
1-2
3-4
SW2(M1) SW1(M0)
L L
H L
L H
H L
SW5(M1) SW6(M0)
L H
L L
L H
H L
and sampling frequency of the DAI transmitter are selected using PRO, FC1, and
FC1 FC0
L L
L H
H L
Power Supply Selected
5 V at CN-2
2.4 V at CN-1
Audio Format
16–24-bit, MSB-first, left-justified
IIS
16-bit, MSB-first, right-justified
18-bit, MSB-first, right-justified
Audio Format
16–24-bit, MSB-first, left-justified
IIS
16-bit, MSB-first, right-justified
18-bit, MSB-first, right-justified
Sampling Frequency
44.1 kHz
48 kHz
32 kHz