DM6381F datasheet(6/40 Pages) ETC

6 / 40 page

DM336P

V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set

Final

Version: DM336P-DS-F02

August 15, 2000

DM6383 Pin Description

Pin No.

Pin Name

I/O

Description

1 - 8

UD0 - UD7

I/O

Data Bus Signal, in internal modem:

These signals are connected to the data bus of the PC I/O slot.

They are used to transfer data between the PC and the DM6383.

Modem Control Output, in external Modem:

Memory address mapping of the controller is E800H.

/IOR

I/O Read:

An active low signal used to read data from the DM6383.

GND

Ground

/IOW

I/O Write:

An active low signal used to write data to DM6383.

/AEN

Address Enable:

This is an active low signal to enable the system address for

DM6383.

13 - 24

A11 - A0

System Address:

These signals are connected to the bus of PC I/O slot. They are

used to select DM6383 I/O ports.

25, 36, 52,

100

VDD

+5V Power Supply

26, 27, 28,

29, 33 - 35

IRQ4, IRQ5,

IRQ7, IRQ10,

IRQ11, IRQ12,

IRQ15

Interrupt Request:

These are 8 interrupt request pins. Only one pin, which is decoded

from Configuration Register, can be activated, the other pins are

left floating. The active pin will go high when an interrupt request is

generated from the DM6383.

RESET

Reset:

An active high signal used to power-on reset the DM6383.

XTAL1

Crystal Oscillator Input

XTAL2

Crystal Oscillator Output

TEST2

Test Pin (see description of pin 99)

EAB/VP

External ROM Select:

Should be connected to low state.

/RUCS

RX DSP Register Select Output:

Memory address mapping of the controller is E400H.

CA16

Bank Switch Control:

This signal is used to switch external program memory between

bank 0 (lower 64K bytes) and bank 1 (upper 64K bytes) when the

EPROM for system use is 27010 (128Kx8 bits). Otherwise, this pin

is not connected.

41, 68, 85, 96

GND

Ground

Controller Counter 0 Input

Controller Counter 1 Input

/RI

Ring Signal Input

45, 46,

48 - 51

P1.1, P1.2,

P1.4 - P1.7

I/O

Controller Port 1 I/O

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