73K324L-IGT ETC [List of Unclassifed Manufacturers], 73K324L-IGT Datasheet - Page 11

• Manufacturer Part Number: 73K324L-IGT
• Description: CCITT V.22bis, V.22, V.21, V.23, Bell 212A Single-Chip Modem
• Manufacturer: ETC [List of Unclassifed Manufacturers]

DETECT REGISTER
BIT NO.
D0
D1
D2
D3
D4
D5
D6
D7
010
DR
INDICATOR
RECEIVE
LEVEL
D7
NAME
Signal
Quality
Indicator
Call Progress
Detect
Special Tone
Detect
Carrier
Detect
Unscr. Mark
Detect
Receive Data
S1
Detect
Receive
Level
Indicator
PATTERN
DETECT
Pattern
D6
S1
CR0 D0
RECEIVE
1
1
0
1
CONDITION
DATA
D5
TR
CCITT V.22bis, V.22, V.21, V.23, Bell 212A
0
1
X
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D0 CR2 D5
UNSCR.
DETECT
1
1
0
0
MARK
D4
11
DESCRIPTION
Indicates normal received signal.
Indicates low received signal quality (above average error
rate). Interacts with Special Register SQ bits D2, D1.
No call progress tone detected.
Indicates presence of call progress tones. The call
progress detection circuitry is activated by energy in the
normal 350 to 620 Hz call progress band.
Condition not detected
Condition detected
2225 Hz ±10 Hz answer tone detected in V.22bis, V.22
modes.
2100 Hz ±21 Hz answer tone detected in V.22bis, V.22
modes.
900 Hz SCT tone detected in V.23 mode.
2100 Hz or 2225 Hz answer tone detected in QAM,
DPSK mode.
No carrier detected in the receive channel.
Indicated carrier has been detected in the received
channel. Should be time qualified by software.
No unscrambled mark being received.
Indicates detection of unscrambled marks in the received
data. Should be time qualified by software.
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.
No S1 pattern being received.
S1 pattern detected. Should be time qualified by
software.
(11001100...) sent in DPSK 1200 bit/s mode. Generated
pattern must be properly aligned to transmitter baud clock
to be detected.
Received signal level below threshold, ( -25 dBm0);can
use receive gain boost (+18 dB)
Received signal above threshold.
CARRIER
DETECT
D3
S1
is
SPECIAL
DETECT
TONE
an
D2
Single-Chip Modem
unscrambled
DETECT
PROG.
CALL
D1
73K324L
double
INDICATOR
QUALITY
SIGNAL
D0
dibit