73k222al ETC-unknow, 73k222al Datasheet - Page 14

• Manufacturer Part Number: 73k222al
• Description: V.22, V.21, Bell 212a, Single-chip Modem
• Manufacturer: ETC-unknow

73K222AL
V.22, V.21, Bell 212A, 103
Single-Chip
TONE REGISTER
BIT NO.
D6
D7
ID REGISTER
BIT NO.
D7, D6, D5, D4
D3-D0
011
110
TR
ID
OUTPUT
CONTR.
RXD
D7
D7
ID
(continued)
Identification
RXD Output
Guard Tone
Signature
Not Used
Transmit
Control
Device
NAME
NAME
TRANSMIT
GUARD
TONE
D6
D6
ID
Undefined
D7 D6 D5 D4
0
0
1
1
1
1
1
TRANSMIT
ANSWER
CONDITION
CONDITION
TONE
D5
D5
ID
0
1
0
1
1
1
1
0
1
0
1
X
X
X
0
1
1
0
X
X
X
0
0
1
1
TRANSMIT
DTMF
D4
D4
ID
14
DESCRIPTION
Disables guard tone generator.
Enables guard tone generator (See D0 for selection of
guard tones).
Enables RXD pin. Receive data will be output on RXD.
Disables RXD pin. The RXD pin reverts to a high
impedance with internal weak pull-up resistor.
DESCRIPTION
Indicates Device:
73K212AL, 73K321L, 73K322L
73K221AL or 73K302L
73K222AL, 73K222BL
73K224L
73K324L
73K224BL
73K324BL
Mask in software
DTMF 3
D3
D3
X
DTMF 2
D2
D2
X
DTMF 1/
SPEED
OVER-
D1
D1
X
ANSWER/
DTMF 0/
GUARD
D0
D0
X