參數(shù)資料
型號： 73K222BL
英文描述： Low-Cost, 7ns, Low-Power Voltage Comparators
中文描述： 低速調(diào)制解調(diào)器
文件頁數(shù)： 8/26頁
文件大?。?/td> 238K
代理商： 73K222BL
73K222BL
V.22, V.21, Bell 212A, Bell 103
Single-Chip Modem with Integrated Hybrid
8
REGISTER DESCRIPTIONS
Four 8-bit internal registers are accessible for
control and status monitoring. The registers are
accessed in read or write operations by
addressing AD0, AD1 and AD2 lines. The address
lines are latched by ALE. Register CR0 controls
the method by which data is transferred over the
phone line. CR1 controls the interface between the
microprocessor and the 73K222BL internal state.
DR is the Detect Register which provides an
indication of monitored modem status conditions.
TR, the Tone Control Register, controls the DTMF
generator, answer and guard tones and RXD
output gate used in the modem initial connect
sequence. All registers are read/write except for
DR which is read only. Register control and status
bits are identified below:
REGISTER BIT SUMMARY
NOTE:
When a register containing reserved control bits is written into, the reserved bits must be
programmed as 0's.
X = Undefined, mask in software
MODULATION
OPTION
00 = NORMAL
01 = ANALOG LOOPBACK
10 = REMOTE DIGITAL
LOOPBACK
11 = LOCAL DIGITAL
LOOPBACK
CONTROL
REGI0
000
TRANSMIT
MODE
3
TRANSMIT
MODE
2
TRANSMIT
MODE
1
TRANSMIT
ENABLE
ORIGINATE/
ANSWER
DATA BIT NUMBER
AD2 - AD0
REGISTER
ADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
TEST
MODE
0
TEST
MODE
1
RESET
CLK
CONTROL
BYPASS
SCRAMBLER
ENABLE
DETECT
INTERRUPT
TRANSMIT
PATTERN
0
TRANSMIT
PATTERN
1
001
CONTROL
REGISTER
1
CR1
LONG
LOOP
CALL
PROGRESS
ANSWER
TONE
CARRIER
DETECT
RECEIVE
DATA
010
DETECT
REGISTER
DR
DTMF0/
GUARD/
ANSWER/
TONE
DTMF1/
OVERSPEED
DTMF2
DTMF3
TRANSMIT
DTMF
TRANSMIT
ANSWER
TONE
RXD
OUTPUT
CONTROL
011
TONE
CONTROL
REGISTER
TR
TRANSMIT
MODE
0
0000 = PWR DOWN
0001 = INT SYNCH
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
0 = DISABLE
TXA OUTPUT
1 = ENABLE
TXA OUTPUT
0 = ANSWER
1 = ORIGINATE
00 = TX DATA
01 = TX ALTERNATE
10 = TX MARK
11 = TX SPACE
0 = DISABLE
1 = ENABLE
0 = NORMAL
1 = BYPASS
SCRAMBLER
0 = XTAL
1 = 16 X DATA
RATE OUTPUT
AT CLK PIN IN
DPSK MODE
ONLY
0 = NORMAL
1 = RESET
OUTPUTS
RECEIVED
DATA STREAM
0 = CONDITION NOT DETECTED
1 = CONDITION DETECTED
RXD PIN
0 = NORMAL
1 = WEAK PULL-UP
0 = OFF
1 = ON
0 = Disable DTMF
1 = TX DTMF
4 BIT CODE FOR 1 OF 16
DUAL TONE COMBINATIONS
CR0
0 = 1200 BIT/S DPSK
1 = 600 BIT/S DPSK
0 = BELL 103 FSK
1 = V.21 FSK
TRANSMIT
GUARD/
TONE
0 = 2225 Hz A.T.
1800 Hz G.T.
1 = 2100 Hz A.T.
500 Hz G.T.
0 = OFF
1 = ON
UNSCR.
MARKS
ID
REGISTER
10
110
1
0
X
OH
0
X
X
X
X
X
X
X = Undefined, mask in software
0 = OH Relay driver open
1 = OH Open drain driver pulling low
00XX = 73K212AL, 322L, 321L
01XX = 73K221AL, 302L
10XX = 73K222AL, 222BL
1100 = 73K224L, 224BL
1110 = 73K324L, 324BL
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73K222BL-IGT 制造商:TDK 制造商全稱:TDK Electronics 功能描述:V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid
73K222BL-IH 制造商:TDK 功能描述:73K222BL-IH
73K222BL-IH/F 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray
73K222BL-IHR/F 功能描述:電信集成電路 Modem Data Pump With Hybrid Relay Driver RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray
73K222L-IH 制造商:SSI 功能描述:
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