73K302L Datasheet, PDF (8/29 Pages) TDK Electronics – Single-Chip Modem

73K302L
Bell 212A, 103, 202
Single-Chip Modem
REGISTER ADDRESS TABLE
ADDRESS
DATA BIT NUMBER
REGISTER
AD2 - AD0
D7
D6
D5
D4
D3
D2
D1
D0
CONTROL
REGISTER
0
CR0
000
MODULATION
OPTION
0
TRANSMIT
MODE
3
TRANSMIT
MODE
2
TRANSMIT
MODE
1
TRANSMIT
MODE
0
TRANSMIT
ENABLE
ORIGINATE/
ANSWER
CONTROL
REGISTER CR1
001
1
0=103 FSK
1=202 FSK
TRANSMIT
PATTERN
1
TRANSMIT
PATTERN
0
0000=PWR DOWN
1100=FSK
0010=EXT SYNCH
0011=SLAVE SYNCH
0100=ASYNCH 8 BITS/CHAR
0101=ASYNCH 9 BITS/CHAR
0110=ASYNCH 10 BITS/CHAR
0111=ASYNCH 11 BITS/CHAR
1100=FSK BELL 103 OR 202
ENABLE
DETECT
INTERRUPT
BYPASS
SCRAMBLER/
ADD PH. EQ.
CLK
CONTROL
RESET
0=DISABLE
TXA OUTPUT
1=ENABLE
TXA OUTPUT
IN 212, 103 MODES:
0=ANSWER
1=ORIGINATE
IN 202 MODE:
0=RECEIVE @ 1200 BIT/S,
TRANSMIT @ 150 BIT/S
1=RECEIVE @ 150 BIT/S,
TRANSMIT @ 1200 BIT/S
TEST
MODE
1
TEST
MODE
0
DETECT
REGISTER
DR
010
TONE
CONTROL
TR
011
REGISTER
00=TX DATA
01=TX ALTERNATE
10=TX MARK
11=TX SPACE
X
X
0=DISABLE
1=ENABLE
RECEIVE
DATA
0=NORMAL
1=BYPASS
SCRAMBLER
1=ADD EXTRA
PHASE EQ.
IN 202 ONLY
0=XTAL
1=16 X DATA
RATE OUTPUT
AT CLK PIN IN
DPSK MODE
ONLY
0=NORMAL
1=RESET
UNSCR.
MARK
CARRIER
DETECT
SPECIAL
TONE
00=NORMAL
01=ANALOG LOOPBACK
10=REMOTE DIGITAL
LOOPBACK
11=LOCAL DIGITAL
LOOPBACK
CALL
PROGRESS
LONG
LOOP
OUTPUTS
RECEIVED
DATA STREAM
RXD
OUTPUT
CONTROL
TRANSMIT
SCT
TONE
TRANSMIT
ANSWER
TONE
TRANSMIT
DTMF
RXD PIN
0=NORMAL
1=TRI STATE
0=OFF
1=ON
0=OFF
1=ON
0=DATA
1=TX DTMF
0=CONDITION NOT DETECTED
1=CONDITION DETECTED
DTMF3
DTMF2/
202T
FDX
DTMF1/
OVERSPEED
DTMF0/
SPECIAL
TONE
4 BIT CODE FOR 1 OF 16
DUAL TONE COMBINATIONS.0=1%
1=2.5%
0=NORMAL
1=FULL DUPLEX IN 202 MODE
0=900 HZ SCT TONE IF
IN ANSWER MODE
=2225 HZ ANSWER TONE
IN 103 OR 212 ORIGINATE
MODES
1=FSK MARK
ID
REGISTER
10
110
ID
ID
ID
ID
X
X
X
X
00XX=73K212AL, 322L, 321L
01XX=73K221AL, 302L
10XX=73K222AL, 222BL
1100=73K224L
1110=73K324L
1100=73K224BL
1110=73K324BL
X = Undefined, mask in software
0 = Only write zeros to this location
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