Rainbow Electronics aP89085 - Manual (Page 12)

Integrated Circuits Inc. aP89341/170/085
Ver 2.1 11 Aug 24, 2006
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Power-down with RAMP-DOWN (PD2-A9H) or without RAMP-DOWN (PD1-E1H)
Fig. 12 Power-down commands timing
1. PDN1 will power-down the chip and set the COUT data to 00H immediately.
2. PDN2 will power-down the chip by Ramp-down the COUT from its current value to 00H.
3. Power-down will start after 350us (at 6KHz sampling rate).
4. The OUT1 pin (BUSY) will output logic HIGH during Ramp-down operation.
5. PDN2 (Power-down with ramp-down) will be executed correctly only if PU2 is
executed before.
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Playback Voice Group (PLAY-55H)
Fig. 13 Playback command timing
1. The 8-bit Voice Group address, G[0:7] follow immediately the 8-bit PLAY command.
2. Once the 16-bit command and address are clocked into the chip, the new voice group
address is loaded into the address buffer immediately and the voice group will be played
accordingly.
3. The OUT1 pin (BUSY) will stay at logic HIGH when the new voice group is played.
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Set OUT2 pin status (STATUS-E3H)
Fig. 14 Setup the status of programmable output pin, OUT2