Instruction Manual

Integrated Circuits Inc. aP89341/170/085
Ver 2.1 10 Aug 24, 2006
Command D7 D6 D5 D4 D3 D2 D1 D0 Description
PUP1 (C5h) 1 1 0 0 0 1 0 1
Power up the chip with NO ramp-up (suitable
for VOUT direct drive)
PUP2 (8Dh) 1 0 0 0 1 1 0 1
Power up the chip WITH ramp-up (suitable for
COUT transistor drive)
PDN1
(E1h)
1 1 1 0 0 0 0 1
Power down the chip with NO ramp-down
(suitable for VOUT direct drive)
PDN2
(A9h)
1 0 1 0 1 0 0 1
Power down the chip WITH ramp-down
(suitable for COUT transistor drive)
0 1 0 1 0 1 0 1
Playback the specified Voice Group
immediately
PLAY
(55h)
G7 G6 G5 G4 G3 G2 G1 G0
Voice Group address
(G7=MSB; G0=LSB)
1 1 1 0 0 0 1 1 Set output status for OUT2 pin
STATUS
(E3h)
0 0 0 1 0 G2 G1 G0
OUT2 = BUSYB (000), 8K (001), 4K, 2K, 1K,
16Hz, 1M, EMPTY (FULLB)
PAUSE
(39h)
0 0 1 1 1 0 0 1
Pause the playback and hold at current COUT
value
RESUME
(1Dh)
0 0 0 1 1 1 0 1
Resume playback from the previous COUT
value
0 1 1 1 0 0 0 1
Pre-load Voice Group address into buffer for
next playback
PREFETCH
(71h)
G7 G6 G5 G4 G3 G2 G1 G0
Voice Group address
(G7=MSB; G0=LSB)
• Power up with RAMP-UP (PU2-C5H) or without RAMP-UP (PU1-8DH)
Fig. 11 Power-up command timing
1. PU1 (C5H) will power-up the chip and set the COUT to 80H immediately and stay
there.
2. PU2 (8DH) will Ramp-up chip and ramp-up COUT from 00H to 80H and stay there.
3. Power-up will start after 350us (at 6KHz sampling rate).
4. Voice will be playback immediately after PU1 / PU2 completes if the section buffer
is filled with the PREFETCH command before power-up.
5. OUT1 (BUSY) will output logic HIGH during Ramp-up operation.
6. PDN2 (Power-down with ramp-down) will be executed correctly only if PU2 is
executed before.