73K324L-IGT ETC [List of Unclassifed Manufacturers], 73K324L-IGT Datasheet - Page 10

• 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 1
BIT NO.
D4
D5
D7, D6
CR1
001
TRANSMIT
PATTERN
D7
1
Add Ph. Eq.
Scrambler/
Transmit
Interrupt
Bypass
Enable
Pattern
NAME
Detect
TRANSMIT
PATTERN
(continued)
D6
0
DETECT
ENABLE
CONDITION
INT.
D7
D5
0
0
1
1
0
1
0
1
D6
0
1
0
1
SCRAMB/
BYPASS
PH.EQ.
ADD
D4
10
DESCRIPTION
Selects normal operation. DPSK and QAM data is
passed through scrambler.
Selects Scrambler Bypass. DPSK and QAM data is
routed around scrambler in the transmit path. In the V.23
mode, additional phase equalization is added to the main
channel filters when D4 is set to 1.
Disables interrupt at INT pin. All interrupts are normally
disabled in Power Down mode.
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
TX DTMF is activated. All interrupts will be disabled if the
device is in Power Down mode.
Selects normal data transmission as controlled by the
state of the TXD pin.
Selects an alternating mark/space transmit pattern for
modem testing and handshaking. Also used for S1
pattern generation. See CR2 bit D4.
Selects a constant mark transmit pattern.
Selects a constant space transmit pattern.
CONTROL
CLK
D3
RESET
D2
MODE
TEST
D1
1
MODE
TEST
D0
0