TP3420A datasheet(10/32 Pages) NSC

Teilenummer	TP3420A

Bauteilbeschribung	ISDN S/T Interface Device

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Hersteller	NSC [National Semiconductor (TI)]

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Functional Description (Continued)

TABLE 4. Control Register Functions

Function

Mnemonic

Bit Number

76543210

Activation/Deactivation

No Operation

NOP

11111111

Power-Down (Note 6)

PDN

00000000

Power-Up

PUP

00100000

Deactivation Request

DR

00000001

Force INFO2 (NT only)

FI2

00000010

Monitor Mode Activation

MMA

00011111

Activation Request

AR

00000011

Device Modes

NT Mode, Adaptive Sampling (Note 6)

NTA

00000100

NT Mode, Fixed Sampling

NTF

00000101

TE Mode, Digital System Interface Slave (Note 7)

TES

00000110

TE Mode, Digital System Interface Master

TEM

00000111

Digital Interface Formats

Digital System Interface Format 1 (Note 6)

DIF1

00001000

Digital System Interface Format 2

DIF2

00001001

Digital System Interface Format 3

DIF3

00001010

Digital System Interface Format 4

DIF4

00001011

BCLK Frequency Settings

Set BCLK to 2.048 MHz

BCLK1

10011000

Set BCLK to 256 kHz

BCLK2

10011001

Set BCLK to 512 kHz

BCLK3

10011010

Set BCLK to 2.56 MHz

BCLK4

10011011

B Channel Exchange

B Channels Mapped Direct, B1 to B1, B2 to B2 (Note 6)

BDIR

00001100

B Channels Exchanged, B1 to B2, B2 to B1

BEX

00001101

DS009143-21

FIGURE 5. TP3240A Enhanced MICROWIRE Control Interface Timing

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TP3420A Datenblatt(PDF) 10 Page - National Semiconductor (TI)

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