aP8942A DIP20 /sop20 42秒语音播放IC 矿井语音芯片

Q: How do I trigger Voice Group 5 in Key Trigger Mode?
A: In Key Trigger Mode, set pin S5 to HIGH while leaving S1-S4 and S6-S8 as NC (Not Connected). Refer to the table on page 11 of the datasheet for the full trigger combinations.

Q: What is the maximum number of Voice Groups supported?
A: The aP8942A supports up to 32 Voice Groups (page 2, "Maximum 32 voice groups").

Q: What resistor value is needed for a 6KHz sampling frequency?
A: Use a 344 kΩ resistor connected between the OSC pin and VDD (page 16, "Sampling Frequency" table).

Q: How does CPU Parallel Trigger Mode work?
A: In CPU Mode:

Set S1-S5 to a 5-bit address (binary) corresponding to the desired Voice Group (1-32).

Pulse the SBT pin HIGH to latch the address and start playback.
See the table on page 12 for address mappings.

Q: How to configure OUT1 and OUT2 for BUSY and STOP signals?
A: Use Output Option 4 (page 6):

OUT1 = STOP pulse

OUT2 = BUSY signal
Ensure "Stop pulse enable" is set in Group Options.

Q: What is the purpose of the RST pin?
A: Setting RST to HIGH immediately stops playback and resets the chip (page 4, "RST pin description").

Q: Can I drive a speaker directly?
A: Yes:

Use VOUT1/VOUT2 (PWM outputs) for direct speaker connection (page 17, Fig. 12).

For better , use COUT with an external BJT (page 8, "COUT description").

Q: What voltage is required for OTP programming?
A: During programming:

VPP = 6.5V (page 4, "VPP description").

Normal operation uses VDD (2.6V–5.0V).

Q: How to eliminate 'POP' noise during playback?
A: Enable Ramp-up-down in Whole Chip Options when using COUT (page 6, "Ramp-up-down enable").

Q: What is the standby current consumption?
A: Standby current is