- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382812 > 73K221AL (TDK Corporation) V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid PDF資料下載
參數(shù)資料
| 型號(hào)： | 73K221AL |
| 廠商： | TDK Corporation |
| 英文描述： | V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid |
| 中文描述： | .22，.21，貝爾212A章，貝爾103單芯片調(diào)制解調(diào)器集成混合 |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 286K |
| 代理商： | 73K221AL |
第1頁第2頁第3頁當(dāng)前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁
73K222BL
V.22, V.21, Bell 212A, Bell 103
Single-Chip Modem with Integrated Hybrid
4
FUNCTIONAL DESCRIPTION
(continued
)
PARALLEL BUS INTERFACE
Four 8-bit registers are provided for control, option
select and status monitoring. These registers are
addressed with the AD0, AD1, and AD2 multiplexed
address lines (latched by ALE) and appear to a control
microprocessor as four consecutive memory locations.
Two control registers and the tone register are
read/write memory. The detect register is read only and
cannot be modified except by modem response to
monitored parameters.
SPECIAL DETECT CIRCUITRY
The special detect circuitry monitors the received
analog signal to determine status or presence of carrier,
call-progress tones, answer tone and weak received
signal (long loop condition). An unscrambled mark
request signal is also detected when the received data
out of the DPSK demodulator before the descrambler
has been high for 165.5 ms ± 6.5 ms minimum. The
appropriate detect register bit is set when one of these
conditions changes and an interrupt is generated for all
purposes except long loop. The interrupts are disabled
(masked) when the enable interrupt bit is set to 0.
DTMF GENERATOR
The DTMF generator will output one of 16 standard
tone pairs determined by a 4-bit binary value and TX
DTMF mode bit previously loaded into the tone register.
Tone generation is initiated when the DTMF mode is
selected using the tone register and the transmit enable
(CR0 bit D1) is changed from 0 to 1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 73K222AL | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IGT | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IH | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IP | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AU | Single-Chip Modem Modem with UART |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 73K222AL | 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Single-Chip Modem |
| 73K222AL-IGT | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IH/F | 功能描述:電信集成電路 Single Chip Modem /103 Modem Data Pump 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 |
| 73K222AL-IHR/F | 功能描述:電信集成電路 Single Chip Modem /103 Modem Data Pump 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。