73K321L Ver la hoja de datos (PDF) - TDK Corporation
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73K321L Datasheet PDF : 24 Pages
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73K321L
CCITT V.23, V.21
Single-Chip Modem
REGISTER ADDRESS TABLE
ADDRESS
REGISTER
AD2 - AD0
D7
D6
CONTROL
REGISTER CR0
000
TRANSMIT
MODE 4
0
0
0=V.23 FSK
1=V.21 FSK
DATA BIT NUMBER
D5
D4
D3
D2
D1
D0
TRANSMIT
TRANSMIT
MODE
MODE
0
3
2
TRANSMIT
MODE
0
TRANSMIT
ENABLE
ORIGINATE/
ANSWER
0000=PWR DOWN
0=DISABLE
IN V.21 MODE:
1100=FSK
TXA OUTPUT 0=ANSWER
0001=TRANSMIT DTMF, CALL PROGRESS DETECTION 1=ENABLE
1=ORIGINATE
TXA OUTPUT IN V.23 MODE :
0=RECEIVE @ 1200 BIT/S, TRANSMIT @ 75 BIT/S
1=RECEIVE @ 75 BIT/S, TRANSMIT @ 1200 BIT/S
CONTROL
REGISTER CR1
001
1
DETECT
REGISTER DR
010
TONE
CONTROL
TR
011
REGISTER
ID
REGISTER 10
110
00XX=73K212AL, 322L, 321L
01XX=73K221AL, 302L
10XX=73K222AL, 222BL
1100=73K224L
1110=73K324L
1100=73K224BL
1110=73K324BL
TRANSMIT
PATTERN
1
TRANSMIT
PATTERN
0
ENABLE
DETECT
INTERRUPT
CLK
ADD PH. EQ. CONTROL
RESET
TEST
MODE
1
TEST
MODE
0
00=TX DATA
01=TX ALTERNATE
10=TX MARK
11=TX SPACE
X
X
0=DISABLED
1=ENABLED
0=NORMAL EQ.
1=ADD EXTRA
PHASE EQ.
IN V.23
0=XTAL
0=NORMAL
00=NORMAL
1= NOT SUPPOR1T=ERDESINETHIS DEVICE01=ANALOG LOOPBACK
10=REMOTE DIGITAL
LOOPBACK
11=LOCAL DIGITAL
LOOPBACK
RECEIVE
CARRIER
SPECIAL
CALL
LONG
DATA
X
DETECT
TONE
PROGRESS
LOOP
OUTPUTS
RECEIVED
DATA STREAM
RXD
OUTPUT
CONTROL
TRANSMIT
CALLING
TONE
RXD PIN
0=NORMAL
1=TRI STATE
0=OFF
1=ON
TRANSMIT
ANSWER
TONE
0=OFF
1=ON
TRANSMIT
DTMF
0=DATA
1=TX DTMF
ID
ID
ID
ID
0=CONDITION NOT DETECTED
1=CONDITION DETECTED
DTMF3
DTMF2/
V.23 FDX
DTMF1
4 BIT CODE FOR 1 OF 16
DUAL TONE COMB-
INATIONS. OVERIDES
OTHER TRANSMIT MODES
0=HALF DUPLEX V.23
1=ALLOWS V.23 FULL
DUPLEX OPERATION
X
X
X
DTMF0/
SPECIAL
TONE
0=ANSWER TONE FREQ.=2225 Hz
FSK MARK WILL BE INDICATED
BY SPECIAL TONE BIT IN DR
1=ANSWER TONE FREQ.=2100 Hz
EITHER 2100 Hz (IN ORIG.) OR
1300 Hz (IN ANS.) WILL BE
INDICATED BY SPECIAL TONE
BIT IN DR
X
X = Undefined, mask in software
0 = Only write zero to these locations
7
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