QFP80-P-1420-0.80-BK Просмотр технического описания (PDF) - Oki Electric Industry

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Компоненты Описание

производитель

QFP80-P-1420-0.80-BK

Multi-Function PCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM7503

XOUT

8.192 MHz CLK signal output.

If capacitance load is given to the output, the current consumption will increase. About 0.03 mA/

pF.

AD0, AD1

Address data inputs for the internal control registers.

Addressing of the internal control registers is executed by AD0 and AD1 and sub address data,

DB7 and DB6.

AD1 AD0 DB7 DB6

00

01

0010

11

00

01

WRITE 0

1

1

0

11

1 0 ——

1100

1101

1110

1111

Function

ON/OFF controls of sounder, R-Tone, F-Tone

Level/Frequency controls of sounder, R-Tone

PB tone control

Controls of internal speech path switch and general latch

Watchdog timer reset

Controls of receive gain and side tone gain

Controls of transmit hold tone, PB tone, handfree input, handset inputs gain

Controls of speaker pre-amplifier gain and additional speaker gain

Controls of receive PAD and incoming tone input gain

Scanning output control

Scanning interrupt reset

LCD deflection angle control voltage setting

Power ON/OFF control

CODEC control (Controls of companding law and digital loop)

READ 1 0 — — Scanning data read-out

WRN

Write signal for internal control registers.

Data on the data bus is written into the registers at the rising edge of WRN under the condition

of digital "0" of CEN (Chip Enable). While CEN is in digital "1" state, WRN becomes invalid. The

Write cycle is a minimum of 2 ms regardless of the presence or absence of clock signals.

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