ACO160
Deluxe Audio-Controlled Oscillator
2
999 SW 1
st
Ave. #1617, Miami, FL 33130
Simplified Block Diagram
32-pin TQFP pinout
ACO160 Pins
Pin
Name
Direction
Description
1
VDDH
Supply
4.5-5.5v I/O supply
2
PITCH
Out
Pitch CV out at approximately 0.42v/oct
3
VDDA
Supply
3.3v analog supply, bypass with 1.0-2.2uF ceramic capacitor
4
RSTN
Input
0-VDDH Asynchronous active low reset
5
VSS
Supply
Ground
6
ASCAP
Input
Tuning input for DC offset of PITCH output, tunable from VSS to VDDH
in 8 discrete steps
7
VDDH
Supply
4.5-5.5v I/O supply
8
VSS
Supply
Ground
9
10
MODE0/
MODE1
Input
0-VDDH, sets ACO160 mode:
MODE1/0 = 00: Test mode only
MODE1/0 = 01: CK1024, audio on
MODE1/0 = 10: MIDI on, audio off
MODE1/0 = 11: MIDI, audio both on
11
SYNC
Input
0-VDDH input with hysteresis around VDDH/2 to hard sync analog
oscillator outputs, can AC couple to VDDH/2
12
FTRACK
Input
Set to VDDH to enable frequency tracking, set to 0v to freeze current
pitch. Can tie to GATE output for intelligent pitch freeze operation.
13 SQUARE
Output 0-VDDA Square wave output
14
SAW
Output 0-VDDA Sawtooth wave output
