AKD4562 Datasheet, PDF (7/30 Pages) Asahi Kasei Microsystems – EVALUATION BOARD REV.A FOR AK4562

ASAHI KASEI
[AKD4562]
5) Evaluation of A/D using D/A converted data.
It is possible to make evaluation in the form of analog inputs and analog outputs by interfacing with various
AKM’s D/A evaluation boards with PORT3. Nothing should be connected to PORT4.
JP6
X_BCLK
JP7
LRCK
JP8
BCLK
JP11
SDTI
JP12
DIR
JP13
CLK
JP14
XTE
32fs 64fs ADC DIR ADC DIR ADC DIR VD GND
6) Evaluation of A/D using DIT. (Optical link)
PORT1 (DIT) is used. DIT generates audio bi-phase signal from received data and which is output through
optical connector (TOTX176). It is possible to connect AKM’s D/A converter evaluation boards on the
digital-amplifier which equips DIR input. Nothing should be connected PORT3 and PORT4. In case of
using external clock through a BNC connector (J1), select EXT on JP13 (CLK) and short JP14 (XTE). DIT
(AK4353) corresponds to only I²S compatible mode.
JP6
X_BCLK
JP7
LRCK
JP8
BCLK
JP11
SDTI
JP12
DIR
JP13
CLK
JP14
XTE
32fs 64fs ADC DIR ADC DIR ADC DIR VD GND
7) All interfacing signals (MCLK, BCLK, LRCK) are fed from the external circuit through PORT3.
PORT3 is used. JP7, 8, 11 and 13 should be open.
JP6
X_BCLK
JP7
LRCK
JP8
BCLK
JP11
SDTI
JP12
DIR
JP13
CLK
JP14
XTE
32fs 64fs ADC DIR ADC DIR ADC DIR VD GND
n The function of the toggle SW
Upper-side is “H” and lower-side is “L”.
[SW1] (PDN): Power down of AK4562. Keep “H” during normal operation.
[SW2] (DIT): Power down of AK4353. Keep “H” during normal operation.
n Indication for LED
[LED1] (VERF): Monitor VERF pin of the CS8412. LED turns on when some error has occurred to CS8412.
[LED2] (PREM): Indicate whether the input data of CS8412 is pre-emphasized or not.
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