AKD4620B-B_06 Datasheet, PDF (3/63 Pages) Asahi Kasei Microsystems – 24Bit A/D & D/A converter

ASAHI KASEI
[AKD4620B-B]
„ Evaluation modes
Applicable evaluation modes
(1) Loopback mode (Default)
(2) Evaluation of DAC
(3) Evaluation of ADC
1) Loopback mode (Default)
1-1) Analog input mode
Jumper
Single-ended
Differential
JP3
JP4
JP5
JP6
(LIN) (AINL) (RIN) (AINR)
SINGLE SINGLE SINGLE SINGLE
DIFF
DIFF
DIFF
DIFF
Table 1. Analog Input Mode
SW1-2
(ADMODE)
OFF
ON
(Default)
* As for analog input circuit, please see the following item “Analog Input Buffer Circuit”.
1-2) Sampling speed & MCLK frequency
a) parallel mode
SW1-1
(P/S)
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 ON
ON
OFF
Normal
Speed
512fs
ON OFF ON
OFF
OFF
Double
Speed
256fs
Table 2. Sampling Speed & Master clock Frequency in parallel mode
(Default)
* Parallel mode does not support quad speed mode.
b) serial mode
SW1
(P/S)
OFF
OFF
OFF
DFS1
bit
0
0
1
DFS0
bit
0
1
0
CMODE CKS1 CKS0 SW3-4 SW3-5
bit
bit bit (OCKS1) (OCKS0)
Sampling
Speed of
AK4620B
0
0
1
ON
OFF
Normal
Speed
0
0
1
OFF
OFF
Double
Speed
0
0
1
ON
ON Quad Speed
Table 3. Sampling Speed & Master clock Frequency in serial mode
MCLK
Frequency of
AK4620B
512fs
256fs
128fs
* In serial mode, SW1-4(DFS0), SW1-6(CKS1) and SW1-7(CSK0) should be always “OFF”, and DFS1, DFS0,
CKS1, CKS0 and CMODE bits in the AK4620B should be set via the printer port (PORT3).
<KM078901>
-3-
2006/06