DM6383F datasheet(26/40 Pages) ETC

26 / 40 page

DM336P

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

Final

Version: DM336P-DS-F02

August 15, 2000

DM6381/82 Functional Description

1. System Clock

a. Reference Oscillator Clock

The reference oscillator is provided by an external

40.32 MHz crystal, this is the clock source of the Data

Pump chipset.

b. DSP Clock

This DSP clock is the output of the PLL frequency

synthesizer and its frequency can be selected by

Test1 pin. (see pin description )

c. CODEC Clock

This clock is output via the CODEC_CLK Pin as the

reference clock of the codec chip. This clock is

derived from dividing reference oscillator clock by

two.

d. MSCLK Clock

This clock is derived from dividing the DSP clock by 2

or 4, the divider is programmed by DIV bit

(configuration register bit 14 ) as followed:

Config Reg bit 14

Divider

2. Serial Port

There are two serial ports to provide the interface with

CODEC chip. The serial port 1 (SP1) transfer 32 bits

in each frame while the serial port 2 can transfer 64

bits in each frame. The frame signal of each serial

port can be configured as either input signal or output

signal by the Serial Port Control Register (SPC).

3. Dual Port RAM

The 16 X 8 dual port RAM allows easy system

expansion by adding another DSP or micro-processor.

Address 2000h ~ 200Fh are reserved for this dual

port RAM. The 8 bits dual port RAM data correspond

to the MSBs of the data bus (bit 15 ~ bit 8) of the DSP

core. Upon reading the dual port RAM, the 8 lsb

contents (bit 7 to bit 0) are all 0. For the convenience

of description, the micro-controller port is referred to

as B port and the DSP port is referred to as A port.

4. Interrupt

The DSP core provides 4 nested interrupt inputs:

IRQ3, IRQ2, IRQ1, IRQ0. IRQ3 is the highest priority

input and IRQ0, the lowest. In the V.34 and V.32

application, the IRQ3, IRQ2 and IRQ1 are defined as

external interrupt triggered from the pin IRQ3B,

IRQ2B, IRQ1B respectively.

DM6381/82 Absolute Maximum Ratings*

*Comments

Power supply voltage ......................... -0.5V to +7.0V

Case operating temperature.................. 0

C to 85

Storage temperature ........................ -65

C to 150

Applied voltage on any pin .......................................

.......................................... -0.5V

≤ VIN ≤ VDD+0.5V

Stresses above those listed under "Absolute

Maximum Ratings" may cause permanent damage to

this device. These are stress ratings only. Functional

operation of this device at these or any other

conditions above those indicated in the operational

sections of this specification is not implied or

intended. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

DM6383F датащи(PDF) 26 Page - List of Unclassifed Manufacturers

DM6383F датащи(HTML) 26 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

датащи скачать

ссылки URL