AKD4126-A Datasheet, PDF (2/29 Pages) Asahi Kasei Microsystems – digital sample rate converter.

ASAHI KASEI
[AKD4126-A]
„ Operation sequence
[1] Set up lines of power supply
[VDD] (Red) = +5[V]
(Power supply for regulator REG1 and REG2. REG1 and REG2 supplies 3.3V to the AKD4126-A.)
[GND] (Black) = 0[V]
[2] Set up jumper pins of power supply
(1). Set up AVDD1 and DVDD1 (Set up AVDD and DVDD of the AK4126)
Power supply source of AVDD1 and DVDD1 is selected by JP23.
(a) From VDD terminal
(b) From REG1
JP23
VDD-AK4126
JP23
VDD-AK4126
VDD REG1
(VDD)
VDD REG1
(REG1)
(2). Set up VDD1 and VDD2 (Set up AVDD, DVDD and TVDD of the AK4114, VDD of logic IC
and others)
Power supply source of VDD1 and VDD2 is selected by JP24.
(a) From VDD terminal
(b) From REG2
JP24
VDD-LOGIC
JP24
VDD-LOGIC
VDD REG2
(VDD)
VDD REG2
(REG2)
[3] Evaluation modes
(1). Input PORT
(1)-1. DIR functions of the AK4114 (U2) are used. (Default)
(1)-2. External equipments are connected via 10-pin connector (PORT2).
(2). Output PORT
(2)-1. DIT functions of the AK4114 (U3) are used. (Default)
(2)-2. External equipments are connected via 10-pin connector (PORT4).
[4] Set up jumper pins and DIP-switches of evaluation modes. (Refer to the following.)
[5] Power on.
Power down reset of the AK4126 (U1), the AK4114 (U2) and the AK4114 (U3) should be done once after
power on. Method of power down reset of them is that after once put them on power-down bringing toggle
switches SW6 and SW8 to “L”, release them from power-down bringing toggle switches SW6 and SW8 to
“H”.
<KM083203>
-2-
2007/01