Rainbow Electronics aP89085 - Manual (Page 13)

Integrated Circuits Inc. aP89341/170/085
Ver 2.1 12 Aug 24, 2006
1. Signal output from the pin, OUT2, is defined by G[3:0], as below:
G[3:0] OUT2 G[3:0] OUT2
000 BUSYB 100 1KHz
001 8KHz 101 16Hz
010 4KHz 110 1MHz
011 2KHz 111 FULLB
2. If the STATUS is not executed, default value of OUT2 is the internal Reset signal.
3. BUSYB is the logical inversion of BUSY.
4. EMPTY (or FULLB) is the logical inversion of FULL.
5. Only the 1MHz clock will not be stopped by the PAUSE command.
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Pause and Resume (PLAUS-39H; RESUME-1DH)
Fig. 15 Pause and Resume command timing
6. In Pause state, VOUT1 and VOUT2 will stay at logic LOW while the COUT will stay at
the current D/A data level (i.e. COUT is kept outputting an DC current). When Resume,
the COUT data will continue at the current D/A data level.
7. The Pause state will be released by PDN1, PDN2, PLAY and RESUME commands.
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Prefetch Voice Group Address (PREFETCH-71H)
Fig. 16 Prefetch next Voice Group timing
1. The PREFETCH command pre-load the next Voice Group Address into the address buffer.
2. The OUT3 output (FULL) will become logic HIHG once the Group Address is successfully
loaded.
3. The Voice Group will be played once the playing of the current Voice Group is finished.
4. The FULL signal will become logic LOW once the Voice Group is played and the address
buffer is released and ready for next PREFECT action.
5. Using the PREFECT make sure there is no gap between each Voice Group.