73K324BL Datasheet, PDF(11/34 Page) List of Unclassifed Manufacturers

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73K324BL Datasheet, PDF (11/34 Pages) List of Unclassifed Manufacturers – Single-Chip Modem w/Integrated Hybrid

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73K324BL

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

Single-Chip Modem w/ Integrated Hybrid

DATA SHEET

CONTROL REGISTER 0

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

Answer/

Selects answer mode (transmit in high band, receive

Originate

in low band) or in V.23 HDX mode, receive at 1200 bps

and transmit at 75 bps.

Selects originate mode (transmit in low band, receive in

high band) or in V.23 HDX mode, receive at 1200 bps

and transmit at 75 bps.

Note: This bit works with Tone Register bits D0 and D6

to program special tones detected in the Detect Register.

See Detect and Tone Registers.

Transmit

Disables transmit output at TXA1 & TXA2

Enable

Enables transmit output at TXA1 & TXA2

Note: Transmit enable must be set to 1 to allow

activation of answer tone or DTMF.

D5,D4

Transmit

D5 D4 D3 D2

D3,D2

Mode

0 0 0 0 Selects Power down mode. All functions disabled except

digital interface.

0001

Internal synchronous mode in this mode TXCLK is an

internally derived 600,1200 or 2400 Hz signal. Serial

input data appearing at TXD must be valid on the rising

edge of TXCLK. Receive data is clocked out of RXD on

the falling edge of RXCLK.

0010

External synchronous mode. Operation is identical to

internal synchronous, but TXCLK is connected internally

to EXCLK pin, and a 600, 1200 or 2400 Hz clock must be

supplied externally.

0 0 1 1 Slave synchronous mode Same operation as other

synchronous modes TXCLK is connected internally to

the RXCLK pin in this mode.

0 1 0 0 Selects a synchronous mode 8 bits/character (1 start bit,

6 data bits, 1 stop bit).

0 1 0 1 Selects asynchronous mode - 9 bits/character (1 start bit,

7 data bits, 1 stop bit).

0 1 1 0 Selects asynchronous mode - 10 bits/character (1 start

bit, 8 data bits, 1 stop bit).

0 1 1 1 Selects asynchronous mode - 11 bits/character (1 start

bit, 8 data bits, 1 stop bit) or 2 stop bits)..

1 X 0 0 Selects FSK operation.

Page: 11 of 34

Rev 6.1

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