AK4140-B

ASAHI KASEI [AKD4140-B] AKD4140-B AK4140 Evaluation Board Rev.1 GENERAL DESCRIPTION The AKD4140-B is the evaluation board for the AK4140, BTSC decoder. The AKD4140-B has AKM’s D/A as analog output and AKM’s DIT as digital (S/PDIF) output. „ Ordering guide AKD4140-B --Evaluation board for AK4140 (A cable for connecting with printer port of IBM-AT compatible PC and a control software are packed with this. The control software does not operate on Windows NT.) FUNCTION † Digital interface -S/PDIF 1 channel output (Optical or BNC) - Serial audio data I/F 1 input/output port (10-pin port) -Serial control data I/F 1 input/output port (10-pin port) REG 5V GND 3.3V www.DataSheet4U.com SIF AK4140 AK4386 (DAC) LOUT Analog Out ROUT Opt S/PDIF Out AK4103A (DIT) TX Control Serial Data In/Out Figure 1. AKD4140-B Block Diagram *Circuit diagram and PCB layout are attached at the end of this manual. -1- 2006/08 ASAHI KASEI [AKD4140-B] Evaluation Board Manual „ Operating sequence (1) Set up the power supply lines. [5V] (Red) = 5V [3.3V] (Orange)=3.3V (open when JP1 is shorted) [GND] (Black) = 0V (2) Set up the switches and jumpers. Refer to the following sections. (3) Power on. The AK4140 should be reset once by bringing PDN (SW1) “L” upon power-up. „ Toggle switch set-up SW1 SW3 AK4140_PDN DAC/DIT_PDN Reset switch for AK4140. Set to “H” during normal operation. Bring to “L” once after the power is supplied. Reset switch for DAC and DIT. Set to “H” during norm...