DM336P 查看數據表（PDF） - Unspecified

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DM336P

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

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DM336P

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

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.

9

/IOR

I I/O Read:

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

10

GND

P Ground

11

/IOW

I I/O Write:

An active low signal used to write data to DM6383.

12

/AEN

I Address Enable:

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

DM6383.

13 - 24

A11 - A0

I 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,

VDD

P +5V Power Supply

100

26, 27, 28, IRQ4, IRQ5,

O Interrupt Request:

29, 33 - 35 IRQ7, IRQ10,

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

IRQ11, IRQ12,

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

IRQ15

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

generated from the DM6383.

30

RESET

I Reset:

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

31

XTAL1

I Crystal Oscillator Input

32

XTAL2

O Crystal Oscillator Output

37

TEST2

I Test Pin (see description of pin 99)

38

EAB/VP

I External ROM Select:

Should be connected to low state.

39

/RUCS

O RX DSP Register Select Output:

Memory address mapping of the controller is E400H.

40

CA16

O 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

P Ground

42

T0

I Controller Counter 0 Input

43

T1

I Controller Counter 1 Input

44

/RI

I Ring Signal Input

45, 46,

P1.1, P1.2,

I/O Controller Port 1 I/O

48 - 51

P1.4 - P1.7

6

Final

Version: DM336P-DS-F02

August 15, 2000

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