AKD4620B Datasheet, PDF (6/60 Pages) Asahi Kasei Microsystems – Evaluation board AK4620B

ASAHI KASEI
[AKD4620B-B]
3) Evaluation of A/D using DIT. (Optical link)
DIT generates audio bi-phase signal from received data and which is output through optical connector (PORT2).
It is possible to connect AKM’s D/A converter evaluation boards on the digital-amplifier which equips DIR
input.
3-1) Analog input mode
Jumper
Single-ended
Differential
JP3
JP4
JP5
(LIN) (AINL) (RIN)
SINGLE SINGLE SINGLE
DIFF
DIFF
DIFF
Table 11. Analog Input Mode
JP6
(AINR)
SINGLE
DIFF
SW1-2
(ADMODE)
OFF
ON
* As for analog input circuit, please see the following item “Analog Input Buffer Circuit”.
3-2) DIT output interface (Default: JP7="OPT")
Jumper
JP7
(TX)
Normal & Double Speed
OPT or BNC
Quard Speed
BNC
Table 12. DIT Output Interface
3-3) Sampling speed & MCLK frequency
a) parallel mode
SW1-1
(P/S)
ON
ON
ON
SW1-4 SW1-6 SW1-7 SW3-4 SW3-5
(DFS0) (CKS1) (CKS0) (OCKS1) (OCKS0)
Sampling
Speed of
AK4620B
MCLK
Frequency of
AK4620B
OFF
OFF
OFF
OFF
OFF
Normal
Speed
256fs
OFF
OFF
ON
ON
OFF
Normal
Speed
512fs
ON
OFF
ON
OFF
OFF
Double
Speed
256fs
Table 13. Sampling Speed & Master clock Frequency in parallel mode
* Parallel mode does not support quad speed mode.
<KM078900>
-6-
2005/05