73K324BL-IH/F 查看數據表（PDF） - Teridian Semiconductor Corporation

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73K324BL-IH/F

CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation 

73K324BL

CCITT V.22bis,V.23,V.22,V.21, Bell 212A

Single-Chip Modem w/ Integrated Hybrid

DATA SHEET

CONTROL REGISTER 1

D7

D6

D5

D4

D3

D2

D1

D0

CR0 MODUL. MODUL. MODUL. TRANSMIT TRANSMIT TRANSMIT TRANSMIT ANSWER/

000 OPTION TYPE 1 TYPE 0 MODE 2 MODE 1 MODE 0 ENABLE ORIGINATE

BIT

NAME

CONDITION DESCRIPTION

D0, D1

Test Mode

D1 D0

00

Selects normal operating mode.

01

Analog loopback mode. Loops the transmitted analog

signal back to the receiver, and causes the receiver to

use the same carrier frequency as the transmitter. To

squelch the TXA pin, transmit enable bit as well as Tone

Register bit D2 must be low.

10

Selects remote digital loopback. Received data is looped

back to transmit data internally, and RXD is forced to a

mark. Data on TXD is ignored.

11

Selects local digital loopback. Internally loops TXD back

to RXD and continues to transmit data carrier at TXA pin

D2

Reset

0

Selects Normal Operations

1

Resets modem to power-down state. All Control

Register bits (CR0, CR1, CR2, CR3 and tone) are reset

to zero except CR3 bit D2. The output of the clock pin

will be set to the crystal frequency.

D3

Clock Control

0

Selects 11.0592 MHz crystal echo output at CLK pin.

1

Selects 16 times the data rate output at CLK pin in

DPSK/QAM modes only.

D4

Bypass

0

Selects normal operation. DPSK and QAM data is

Scrambler

passed through scrambler.

1

Selects Scrambler bypass. Bypass DPSK and QAM

data is route around scrambler in the transmit path.

D5

Enable Detect

0

Disables interrupt at INT pin. All interrupts are normally

Interrupt

disabled in power-down mode.

1

Enables INT output. An interrupt will be generated with a

change in status of DR bits D1- D4 and D6. The answer

tone and call progress detect interrupts are masked

when the TX enable bit is set. Carrier detect is masked

when TXDTMF is activated. All interrupts will be disable

if the device is in power-down mode.

D7 D6

D6, D7

Transmit

Pattern

00

Selects normal data transmission as controlled by the

state of the TXD pin.

01

Selects an alternating mar/space transmit pattern for

modem testing and handshaking. Also used for S1

pattern generation (see CR2 bit D4).

10

Selects a constant mark transmit pattern.

11

Selects a constant space transmit pattern.

Page: 13 of 34

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 6.1

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