INTEGRATED

CIRCUITS INC.

VOICE OTP MODULE

Ver1.1

8

D. Input & Output Data

By the 2 Instruction INPUT and OUTPUT, Data can pass inside API4000M, or connect with outside. The

following is the description about each Data Port’s act.

1. Input Data Port

(1) PA ﹕Input Data Port A is a value consists of Input Pin PIO3 ~ PIO0 and PI3 ~ PI0, Following is their

correspondent.

PA

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Input Pin

PIO3

PIO2

PIO1

PIO0

PI3

PI2

PI1

PI0

PS ﹕If PIO3 ~ PIO0 or PI2 ~ PI0 are set to Out Pin, bit7 ~ bit4 or bit2 ~ bit0 will be Unknown State.

(2) PB ﹕Input Data Port B can make Melody change Channel code of instrument and Instrument Code,

Each bit of PB has following act.

PB

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Item

-

C1

C0

Inst4

Inst3

Inst2

Inst1

Inst0

PS﹕

(1). Inst4~Inst0 ﹕Code of Instrument, 0 ~ 31 total 32 type, set as Melody Compiling.

(2). C1,C0 ﹕Code of Channel﹔

C1=1,C0=1 is CH1 ﹔

C1=0,C0=0 is CH2 ﹔

C1=0,C0=1 is CH3 ﹔

C1=1,C0=0 is CH4 ﹔

(3) PC ﹕Input Data Port C is display End State of each channel, each pin of PC has following act.

PC

bit7

Bit6

bit5

bit4

bit3

bit2

bit1

bit0

Item

-

-

-

-

Sn4

Sn3

Sn2

Sn1

PS﹕ (1). Sn4 , Sn3 , Sn2 and Sn1 displayed Channel CH4 , CH3 , CH2 and CH1 if had happen Sound End,

state 1 means Soind End.

2. Output Data Port

(1) PA ﹕Output Data Port A consists of Output Pin PIO3 ~ PIO0 and PO3 ~ PO0, each bit of PA after

API4000M

power on, the initial state is 0, each pin of PA has following act.

PA

bit7

bit6

bit5

bit4

bit3

bit2

bit1

bit0

Output Pin

PIO3

PIO2

PIO1

PIO0

PO3

PO2

PO1

PO0

PS ﹕If PIO3 ~ PIO0 are set to Input Pin, bit7 ~ bit4 will not affect PIO3 ~ PIO0 of state.