AP8921A_15 Datasheet, PDF (10/18 Pages) Aplus Intergrated Circuits – APLUS INTEGRATED CIRCUITS INC

Integrated Circuits Inc.
TRIGGER MODES
aP8921A/10A
Two trigger modes, the KEY and CPU modes, are available for aP8921A/10A series which are
determined by setting the EPORM programmable options during voice data compilation.
For both trigger modes, up to 12 Voice Groups are being played back according to the following
setting of trigger pins S1 to S4.
Voice Group
1
2
3
4
5
6
7
8
9
10
11
12
S1
HIGH
NC
NC
NC
HIGH
NC
NC
HIGH
HIGH
NC
HIGH
HIGH
S2
NC
HIGH
NC
NC
HIGH
HIGH
NC
NC
HIGH
HIGH
NC
HIGH
S3
NC
NC
HIGH
NC
NC
HIGH
HIGH
NC
HIGH
HIGH
HIGH
NC
S4
NC
NC
NC
HIGH
NC
NC
HIGH
HIGH
NC
HIGH
HIGH
HIGH
Note: Where NC (open or no connection) should be replaced by a logic input LOW in CPU
Parallel Trigger Mode.
Key Trigger Mode
With this trigger mode, up to 12 Voice Groups are triggered by setting S1 to S4 to HIHG or NC in
different combinations. Each Voice Group can have its only independent trigger options (See Fig.
4, 5, 7 and 8 for trigger options definition).
Voice Groups can also be triggered sequentially by setting SBT pin to HIGH.
Ver 5.0
10
Aug 23, 2011