73K324L Datasheet, PDF (10/30 Pages) List of Unclassifed Manufacturers – CCITT V.22bis, V.22, V.21, V.23, Bell 212A Single-Chip Modem

73K324L
CCITT V.22bis,V.23,V.22,V.21, Bell 212A
Single-Chip Modem
DATA SHEET
CONTROL REGISTER 1 (continued)
CR1
001
D7
TRANSMIT
PATTERN
1
D6
TRANSMIT
PATTERN
0
BIT NO.
D4
NAME
Bypass
Scrambler/
Add Ph. Eq.
D5
Enable
Detect
Interrupt
D7, D6
Transmit
Pattern
D5
D4
D3
D2
D1
D0
ENABLE
DETECT
INT.
BYPASS
SCRAMB/
ADD
PH.EQ.
CLK
CONTROL
RESET
TEST
MODE
1
TEST
MODE
0
CONDITION DESCRIPTION
0
Selects normal operation. DPSK and QAM data is
passed through scrambler.
1
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.
0
Disables interrupt at INT pin. All interrupts are normally
disabled in Power Down mode.
1
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.
D7 D6
0
0
Selects normal data transmission as controlled by the
state of the TXD pin.
0
1
Selects an alternating mark/space transmit pattern for
modem testing and handshaking. Also used for S1
pattern generation. See CR2 bit D4.
1
0
Selects a constant mark transmit pattern.
1
1
Selects a constant space transmit pattern.
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© 2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.1