AKD4705-A Datasheet, PDF (9/42 Pages) Asahi Kasei Microsystems – 2ch DAC with AV SCART switch

ASAHI KASEI
[AKD4705-A]
Serial Control
The AK4705-A can be controlled via the printer port (parallel port) of IBM-AT compatible PC. Connect PORT3
(µP-IF) with PC by 10 wire flat cable packed with the AKD4705-A.
Be careful connector direction. Flat cable should be connected 10-pin header, red line put on 10pin header 5 and 6
pin.
1
10
Connect
SCL
PC
SDA
AKD4705-A
SDA(ACK)
RED
10 wire flat cable
10 pin Connector
5
6
PORT3
µP-IF
10 pin Header
Figure 2. Connection of 10 pin flat cable for PORT3
Input/Output port List
Signal Name
Notes
Audio
Digital
Input
Output
Input
Video
Input
Output
Slow ^Input
Blanking _Output
J5 (VCRINL), J3 (VCRINR), J9 (TVINL), J8 (TVINR)
J12 (VCROUTL), J10 (VCROUTR), J6 (TVOUTL), J7 (TVOUTR),
J4 (MONOOUT)
Port2 (TORX176) or J2 BNC (RX)
J13 (ENCB), J15 (ENCG), J17 (ENCRC), J19 (ENCC), J21 (ENCV),
J23(ENCY), J25(TVVIN), J14(VCRVIN), J18(VCRRC; Note),
J20(VCRG), J22(VCRB)
J27 (VCRCOUT; Note), J29 (TVVOUT), J30 (TVRC), J31 (TVG), J32
(TVB), J33 (RFV), J34 (VCRVOUT)
J24 (VCRSB)
J24 (VCRSB) , J28 (TVSB)
Fast Input
Blanking Output
J16 (VCRFB)
J26 (TVFB)
Note: Refer JP12 and CIO bit of the AK4705.
Table 6. Input/Output port List
Max: 2Vrms
Max: 3Vrm
Max: D5V+0.3V
Max: 1.5Vp-p
Max: 3Vp-p
Max: VP+0.3V
Max: VP
Max: VVD1+0.3V
Max: VVD2
The indication content for LED
LED turns on during each output is “H”.
[LE1] Indicates unlock or parity error of S/PDIF. Connected to the ERF pin of DIR (AK4112B).
(Normally off.)
[LE2] Indicates the validity status of S/PDIF. Connected to the V pin of DIR (AK4112B).
(Normally off.)
Toggle switch (SW1 on board) operation
“H”: AK4705 is active.
“L”: AK4705 is powered down.
(Note: When the power of AKD4705-A is ON at first, SW1 should be switched from “L” to “H”.)
<KM078601>
-9-
2006/08