NT91315XL 데이터 시트보기 (PDF) - Novatek Microelectronics

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NT91315XL

Microcontroller for Monitor

Novatek Microelectronics 

NT91315XL Series

Pin Descriptions

Pin No.

Designation I/O

Description

NT91315AL NT91315BL NT91315CL NT91315DL

1

2

2

2

2

3

3

3

HK

MODE IN

I Hook switch input

This inverter input pin detects the state

of the hook switch contact. "Off Hook"

is represented by a VSS condition. "On

Hook" is represented by a VDD

condition

I, Z TRI-STATE mode select pin

The two types the NT91315XL are

listed as follows (diode options)

a. Without diode added

MODE Tone/ Dial

IN

Pulse Rate

VDD Pulse 10pps

VSS

Tone

-

Floating Pulse 10pps

b. With diode added

M/B

Ratio

2/3

-

1/2

MODE Tone/ Dial M/B

IN

Pulse Rate Ratio

VDD Pulse 10pps 1/2

VSS

Tone

-

-

Floating Pulse 20pps 1/2

The mode selection pin checks for

tone/pulse dialing as each digit is

entered. In the PULSE mode, the

dialing rate is checked, along with the

make/break ratio, at the entry of the

first key

7

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