73k224bl ETC-unknow, 73k224bl Datasheet - Page 11

• Manufacturer Part Number: 73k224bl
• Description: Single-chip Modem Integrated Hybrid
• Manufacturer: ETC-unknow

CONTROL REGISTER 0
CONTROL REGISTER 1
BIT
D7
BIT
D0, D1
D2
D3
ADDR
ADDR
CR0
CR1
000
001
MODUL.
OPTION
TRANSMIT
PATTERN
D7
D7
1
Clock Control
Modulation
Test Mode
NAME
Option
NAME
Reset
MODUL.
TYPE 1
D6
TRANSMIT
PATTERN
(continued)
D6
0
MODUL.
TYPE 0
D5
CONDITION
CONDITION
INTERRUPT
D1
ENABLE
DETECT
0
0
1
1
Single-Chip Modem w/ Integrated Hybrid
D5
0
1
0
1
0
1
TRANSMIT
D0
1
MODE 2
0
1
0
D4
SCRAMBLER
11
DESCRIPTION
QAM selects 2400 bit/s. DPSK selects 1200 bit/s.
FSK selects 103 mode.
DPSK selects 600 bit/s.
FSK selects V.21 mode.
DESCRIPTION
Selects normal operating mode
Analog loopback mode. Loops the transmitted analog
signal back to the receiver, and causes the receiver to
use the same carrier frequency as the transmitter. To
squelch the TXA pin, transmit enable bit as well as Tone
Register bit D2 must be low.
Selects remote digital loopback. Received data is looped
back to transmit data internally, and RXD is forced to a
mark. Data on TXD is ignored.
Selects local digital loopback. Internally loops TXD back
to RXD and continues to transmit data carrier at TXA pin
Selects Normal Operations
Resets modem to power-down state.
Register bits (CR0, CR1, CR2, CR3 and tone) are reset
to zero except CR3 bit D2. The output of the clock pin
will be set to the crystal frequency.
Selects 11.0592 MHz crystal echo output at CLK pin
Selects 16 times the data rate output at CLK pin in
DPSK/QAM modes only.
BYPASS
V.22bis/V.22/V.21/Bell 212A/103
TRANSMIT
D4
MODE 1
D3
CONTROL
CLOCK
TRANSMIT
MODE 0
D3
D2
RESET
D2
TRANSMIT
ENABLE
D1
73K224BL
MODE 1
TEST
D1
ORIGINATE
All Control
ANSWER/
MODE 0
D0
TEST
D0