AKD7780 Datasheet, PDF (5/48 Pages) Asahi Kasei Microsystems – 24-bit stereo ADC’s, a mono ADC and a stereo SRC.

[AKD7780]
Evaluation Board Manual
„ Operation sequence
1. Set up the power supply lines.
[+12V] (red) = +12V
[-12V] (blue) = -12V
[GND] (black) = 0V
Each supply line should be distributed from the power supply unit.
2. Set up the jumper pins (according to the follows).
3. Connect the needed connector (according to the follows).
4. Power on.
5. Set up the register via PC (according to the follows).
„ Evaluation Mode
(1) ADC with external DIT
1. Connection of connector
For analog input, RCA1(AIN1L)/RCA2(AIN1R) or RCA3(AIN2L)/RCA4(AIN2R) or RCA5(AIN MONO) is
available.
For digital output, optical connector PORT2 (TOTX141) is available.
2. Setting of jumper pins for analog output (JP12 – JP18)
According to Table 3. / Table 4. / Table 5.
3. Set up the FPGA and AK7780 control register via PC.
(2) SRC with external DIR, DIT



1. Connection of connector
For digital input, optical connector PORT1 (TORX141) is available.





For digital output optical connector PORT2 (TOTX141) is available.
2. Set up the FPGA and AK7780 control register via PC.
„
Register Control
It is possible to control AKD7780 via printer port (parallel port) of IBM-AT compatible PC. Connect the P1
port on board to PC with the packed cable.
Control software is packed with this board. The software operation sequence is included in the evaluation board
manual.
„
Indication for LED
[LED] : U17 When power is supplied , LED is lighted to red. Monitor the PC_RQ_N signal and change the color
when the board is communicating with PC.
<KM090600>
-5-
2007/09