73K324L-IGT ETC [List of Unclassifed Manufacturers], 73K324L-IGT Datasheet - Page 14

• 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]

73K324L
CCITT V.22bis, V.22, V.21, V.23, Bell 212A
Single-Chip Modem
CONTROL REGISTER 2
BIT NO.
D0
D1
D2
D3
D4
D5
D6
D7
CR2
100
D7
0
ACCESS
RESET DSP
Train Inhibit
SPEC
REG
Equalizer
Transmit
D6
Register
16 Way
Call Init
Special
Access
Enable
NAME
N/A
S1
CALL
INIT
D5
CONDITION
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
TRANSMIT
D4
S1
14
DESCRIPTION
The adaptive equalizer is in its initialized state.
The adaptive equalizer is enabled. This bit is used in
handshakes to control when the equalizer should
calculate its coefficients.
The adaptive equalizer is active.
The adaptive equalizer coefficients are frozen.
The DSP is inactive and all variables are initialized.
The DSP is running based on the mode set by other
control bits
The receiver and transmitter are using the same decision
plane (based on the Modulator Control Mode).
The receiver, independent of the transmitter, is forced
into a 16
handshaking.
The transmitter when placed in alternating Mark/Space
mode transmits 0101 . . . . scrambled or not dependent
on the bypass scrambler bit and Modulation mode.
When this bit is 1 and only when the transmitter is placed
in alternating Mark/Space mode by CR1 bits D7, D6, an
unscrambled repetitive double dibit pattern of 00 and 11
at 1200 bit/s (S1) is sent.
The DSP is setup to do demodulation and pattern
detection based on the Various mode bits. Both answer
tones are detected in Demod Mode concurrently; TR D0
is ignored.
The
unscrambled mark, and 2100 Hz and 2225 Hz answer
tones.
Normal CR3 access.
Setting this bit and addressing CR3 allows access to the
SPECIAL REGISTER. See the SPECIAL REGISTER for
details.
Must be 0 for normal operation.
16 WAY
DSP
D3
decodes
point
RESET
DSP
D2
decision
call
progress,
INHIBIT
plane.
TRAIN
D1
Used
calling
EQUALIZER
ENABLE
for
D0
tones,
QAM