AKD4706-A Datasheet, PDF (2/34 Pages) Asahi Kasei Microsystems – 2ch DAC with AV SCART switch

ASAHI KASEI
Operation sequence
1) Set up the power supply lines. (Note 1)
[+12V] (Orange)
[+5V] (Red)
[D5V] (Red)
[VVD] (Red)
[AGND] (Black)
[DGND] (Black)
= +12V
= +5.0V (Note 2)
= +5.0V (Note 3)
= +5.0V (Note 4)
= 0V
= 0V
Note: 1. Each supply line should be distributed from the power supply unit.
2. JP2 (REG) should be open when the “+5V” jack is used.
3. JP1 (D-A) should be open when the “D5V” jack is used.
4. JP22 (REG) should be open when the “VVD” jack is used.
2) Set-up the evaluation modes, jumper pins and DIP-switches. (Refer next sections.)
3) Connect the PORT1 (=µP-I/F) with PC by the enclosed 10-wire flat cable.
4) Set up the PC and execute the enclosed control software. (Refer “CONTROL SOFTWARE MANUAL”.)
5) Turn the power on.
6) Reset the AK4706 once by bringing the SW1 (PDN) “L”, and return it to “H”.
Evaluation mode
1) S/PDIF mode (Optical Link or BNC: default)
When the CM0 (DIP-switch S1_1 on board) is “L”, the AK4112B (DIR) generates MCLK, BICK, LRCK and SDATA
from the received bit stream through PORT3 (TORX176: optical link) or J2 (BNC). This mode is used for the evaluation
using CD test disk. The PORT2 (EXT) should be open.
1)-1. DIP-switch set-up
No.
CM0
DIF1
DIF0
1
L
L
L
2
L
L
H
3
L
H
L
4
L
H
H
Audio Data Format of AK4112B
16bit LSB justified
18bit LSB justified
24bit MSB justified
24bit I²S
Table 1. DIP-switch set-up
Default
Much the data format of the AK4706 via I²C-bus control as following notes.
1)-2. Jumper pins set up
Input
TORX
BNC
JP8 (RX)
TORX
BNC
JP3 (EXT)
Open
Open
JP4 (MCLK)
Short
Short
JP5 (BICK)
Short
Short
Table 2. Jumper pins set up
JP6 (SDTI)
Short
Short
JP7 (LRCK)
Short
Short
<KM081401>
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2005/12