TC9328AF datasheet(6/84 Pages) TOSHIBA

Part #	TC9328AF

Description	Portable Audio DTS Controller (DTS-21)

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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6 / 84 page

TC9328AF

2002-02-07

6

Pin No.

Symbol

Pin Name

Function and Operation

Remarks

36~39

P4-0/BUZR

P4-1/SI

P4-2/SO

P4-3/SCK

I/O port 4

/Buzzer output

/Serial data input

/Serial data output

/Serial clock I/O

4-bit I/O ports, allowing input and output

to be programmed in 1-bit units.

The P4-0 pin is also used for buzzer

output. P4-1 to P4-3 are also used as

serial interface circuit (SIO) input /

output pins.

The buzzer output can select 8 kinds of

0.625 to 3 kHz frequencies with 4

modes: continuous output, single-shot

output, 10 Hz intermittent output, and

10 Hz intermittent 1 Hz interval output.

SIO functions for 4-bit or 8-bit serial

data inputs from the SI pin and outputs

from the SO pin at the SCK pin clock

edge.

The clock for serial operation (SCK) is

capable of internal (SCK

= 37.5 kHz)/

external options and rise/fall shift

options. The SO pin is also capable of

switching to serial inputs (SI),

facilitating the control of various LSI’s

and communication between

controllers.

When SIO interrupts are enabled, an

interrupt is generated after SIO

execution and the program jumps to

address 4.

This is useful for high-speed serial

communications.

All SIO inputs use built-in Schmitt

circuits.

P3-3 pins also functions as the output

for a built-in buzzer.

SIO, buzzer, and all associated controls

can be programmed.

40

MUTE

Muting output port

1-bit output port, normally used for

muting control signal output.

This pin can set the internal MUTE bit

to “1” according to a change in the input

of I/O port 1 and HOLD . MUTE bit

output logic can be changed.

41

TEST

Test mode control

input

Input pin used for controlling TEST

mode.

“H” (high) level indicates TEST mode,

while “L” (low) indicates normal

operation.

The pin is normally used at low level or

in NC (no connection) state.

(A pull-down resistor is builtin).

VDD

RIN2

Input instruction

+ SIOon

(P4-1~P4-3)

VDD

(P4-0)

Input

instruction

VDD

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TC9328AF Datasheet(PDF) 6 Page - Toshiba Semiconductor

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