73K224BL データシートの表示（PDF） - Teridian Semiconductor Corporation

部品番号

コンポーネント説明

メーカー

73K224BL

V.22bis, V.22, V.21, Bell 212A, 103 Single-Chip Modem w/ Integrated Hybrid

Teridian Semiconductor Corporation 

73K224BL

V.22bis, V.22, V.21, Bell 212A, 103

Single-Chip Modem w/ Integrated Hybrid

DATA SHEET

DETECT REGISTER (continued)

DR

ADDR

010

BIT

D2

D3

D4

D5

D6

D7

D7

D6

D5

D4

D3

D2

D1

D0

RECEIVE

LEVEL

INDICATOR

S1

PATTERN

DETECT

RECEIVE

DATA

UNSCR.

MARK

DETECT

CARR.

DETECT

ANSWER

TONES

DETECT

CALL

PROG.

DETECT

SIGNAL

QUALITY

INDICATOR

NAME

CONDITION DESCRIPTION

Answer Tone

0

No answer tone detected.

Received

1

In call init mode, indicates detection of 2225 Hz answer

tone in Bell mode (TR bit D0 = 0) or 2100 Hz if in CCITT

mode (TR bit D0 = 1). The device must be in originate

mode for detection of answer tone. Both answer tones are

detected in demodulation mode.

Carrier Detect

0

No carrier detected in the receive channel.

1

Indicated carrier has been detected in the received

channel.

Unscrambled

0

No unscrambled mark.

Mark Detect

1

Indicates detection of unscrambled marks in the received

data. Should be time qualified by software.

Receive Data

Continuously outputs the received data stream. This data is

the same as that output on the RXD pin, but it is not

disabled when RXD is tri-stated.

S1 Pattern

0

No S1 pattern being received.

Detect

1

S1 pattern detected. Should be time qualified by software.

S1 pattern is defined as a double di-bit (001100..)

unscrambled 1200 bit/s DPSK signal. Pattern must be

aligned with baud clock to be detected.

Receive Level

Indicator

0

Received signal level below threshold, (typical ≈ -25 dBm0);

can use receive gain boost (+18 dB).

1

Received signal above threshold.

Page: 13 of 33

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 7.1

Share Link: