73K222AL
V.22, V.21, Bell 212A, 103
Single-Chip Modem
DATA SHEET
REGISTER ADDRESS TABLE
ADDRESS
DATA BIT NUMBER
REGISTER
AD2 - AD0
000
D7
D6
0
D5
D4
D3
D2
D1
D0
CONTROL
REGISTER
0
TRANSMIT
MODE
3
TRANSMIT
MODE
2
TRANSMIT
MODE
1
TRANSMIT
MODE
0
MODULATION
OPTION
TRANSMIT
ENABLE
ORIGINATE/
ANSWER
CR0
0000 = PWR DOWN
0001 = INT SYNCH
0010 = EXT SYNCH
0011 = SLAVE SYNCH
0 = 1200 BIT/S DPSK
1 = 600 BIT/S DPSK
0 = BELL 103 FSK
1 = V.21 FSK
0 = ANSWER
0 = DISABLE
TXA OUTPUT
1 = ENABLE
TXA OUTPUT
1 = ORIGINATE
0100 = ASYNCH 8 BITS/CHAR
0101 = ASYNCH 9 BITS/CHAR
0110 = ASYNCH 10 BITS/CHAR
0111 = ASYNCH 11 BITS/CHAR
1100 = FSK
CONTROL
REGISTER
1
TRANSMIT
PATTERN
1
TRANSMIT
PATTERN
0
ENABLE
TEST
MODE
1
TEST
MODE
0
BYPASS
CLK
CR1
001
DETECT
RESET
SCRAMBLER
CONTROL
INTERRUPT
0 = DISABLE 0 = NORMAL
1 = ENABLE 1 = BYPASS
0 = XTAL
0 = NORMAL
00 = NORMAL
00 = TX DATA
1 = 16 X DATA 1 = RESET
01 = ANALOG LOOPBACK
10 = REMOTE DIGITAL
LOOPBACK
01 = TX ALTERNATE
10 = TX MARK
SCRAMBLER RATE OUTPUT
AT CLK PIN IN
DPSK MODE
ONLY
11 = TX SPACE
11 = LOCAL DIGITAL
LOOPBACK
DETECT
RECEIVE
DATA
UNSCR.
MARKS
CARRIER
DETECT
ANSWER
TONE
CALL
LONG
LOOP
DR
TR
010
011
X
X
REGISTER
PROGRESS
OUTPUTS
0 = CONDITION NOT DETECTED
1 = CONDITION DETECTED
RECEIVED
DATA STREAM
DTMF0/
GUARD/
ANSWER/
TONE
TONE
RXD
TRANSMIT
GUARD/
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
DTMF1/
OVERSPEED
CONTROL
REGISTER
OUTPUT
CONTROL
DTMF3
DTMF2
4 BIT CODE FOR 1 OF 16
0 = DATA
RXD PIN
0 = OFF
1 = ON
0 = OFF
1 = ON
DUAL TONE COMBINATIONS
0 = 2225 Hz A.T.
1800 Hz G.T.
1 = TX DTMF
0 = NORMAL
1 = TRI STATE
1 = 2100 Hz A.T.
500 Hz G.T.
ID
ID
ID
10
110
ID
ID
X
X
X
X
REGISTER
00XX = 73K212AL, 322L, 321L
01XX = 73K221AL, 302L
10XX= 73K222AL, 222BL
1100 = 73K224L
X = Undefined, mask in software
1110 = 73K324L
1111 = 73K224BL
1101 = 73K324BL
Page: 8 of 27
© 2007 TERIDIAN Semiconductor Corporation
Rev 6.1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
