AP8921A Aplus Integrated circuits Inc., AP8921A Datasheet - Page 10

• Manufacturer Part Number: AP8921A
• Description: Voice Otp Ic
• Manufacturer: Aplus Integrated circuits Inc.

TRIGGER MODES
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.
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 2.1
Note: Where NC (open or no connection) should be replaced by a logic input LOW in CPU
Parallel Trigger Mode.
Voice Group
10
11
12
1
2
3
4
5
6
7
8
9
Integrated Circuits Inc.
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
NC
NC
NC
NC
NC
NC
S1
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
NC
NC
NC
NC
NC
NC
S2
10
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
NC
NC
NC
NC
NC
NC
S3
aP8921A/10A
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
NC
NC
NC
NC
NC
NC
S4
Apr 3, 2007