AKD4621-B Datasheet, PDF (7/50 Pages) Asahi Kasei Microsystems – AK4621 Evaluation board Rev.2

[AKD4621-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) DIT output interface (Default: JP7 (TX) ="OPT")
Jumper
Normal Speed & Double Speed
JP7
(TX)
OPT (Default) or BNC
Quad Speed
BNC
Table 15. DIT Output Interface
3-2) Sampling speed & MCLK frequency
a) Parallel mode (Default)
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
AK4621
MCLK
Frequency of
AK4621
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 16. Sampling Speed & Master clock Frequency in parallel mode
(Default)
* Parallel mode does not support quad speed mode.
<KM100802>
-7-
2010/12