73K224L-28IH TDK [TDK Electronics], 73K224L-28IH Datasheet - Page 8

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73K224L-28IH

Manufacturer Part Number
73K224L-28IH
Description
V.22bis/V.22/V.21/ Bell 212A/Bell 103 Single-Chip Modem
Manufacturer
TDK [TDK Electronics]
Datasheet

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73K224L
V.22bis/V.22/V.21/Bell 212A/Bell 103
Single-Chip Modem
CONTROL REGISTER 0
CR0
000
BIT NO.
D0
D1
D5, D4,
D3, D2
D6,D5
MODUL.
OPTION
D7
Modulation
Originate
Transmit
Transmit
Answer/
Enable
NAME
MODUL.
Mode
Type
TYPE 1
D6
MODUL.
TYPE 0
D5
D5 D4
0
0
0
0
0
0
0
0
1
CONDITION
D6
0
0
0
0
1
1
1
1
X
1
0
0
0
1
0
1
TRANSMIT
D3 D2
D5
MODE 2
0
0
1
1
0
0
1
1
0
0
0
1
D4
0
1
0
1
0
1
0
1
0
DESCRIPTION
Selects answer mode (transmit in high band, receive in low
band).
Selects originate mode (transmit in low band, receive in
high band).
Disables transmit output at TXA.
Enables transmit output at TXA.
Note: Transmit Enable must be set to 1 to allow activation
of Answer Tone or DTMF.
Selects power down mode. All functions disabled except
digital interface.
Internal synchronous mode. In this mode TXCLK is an
internally derived 600,1200 or 2400 Hz signal. Serial input
data appearing at TXD must be valid on the rising edge of
TXCLK. Receive data is clocked out of RXD on the falling
edge of RXCLK.
External synchronous mode. Operation is identical to
internal synchronous, but TXCLK is connected internally to
EXCLK pin, and a 600, 1200 or 2400 Hz clock must be
supplied externally.
Slave synchronous mode. Same operation as other
synchronous modes. TXCLK is connected internally to the
RXCLK pin in this mode.
Selects asynchronous mode - 8 bits/character (1 start bit, 6
data bits, 1 stop bit).
Selects asynchronous mode - 9 bits/character (1 start bit, 7
data bits, 1 stop bit).
Selects asynchronous mode - 10 bits/character (1 start bit,
8 data bits, 1 stop bit).
Selects asynchronous mode - 11 bits/character (1 start bit,
8 data bits, Parity and/or 1 or 2 stop bits).
Selects FSK operation.
QAM
DPSK
FSK
8
TRANSMIT
MODE 1
D3
TRANSMIT
MODE 0
D2
TRANSMIT
ENABLE
D1
ORIGINATE
ANSWER/
D0

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