Integrated Circuits Inc.

aP89341/170/085

Ver 5.0

10

Aug 23, 2010

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)

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.