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參數(shù)資料
| 型號： | 73K321L |
| 廠商： | TDK Corporation |
| 英文描述： | Miniature Switch, High Precision |
| 中文描述： | 國際電話電報(bào)諮詢委員會.23，.21單芯片調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 5/24頁 |
| 文件大小： | 140K |
| 代理商： | 73K321L |
73K321L
CCITT V.23, V.21
Single-Chip Modem
5
DTE USER INTERFACE
NAME
PLCC/DIP
PIN NUMBER
19
TYPE
DESCRIPTION
EXCLK
I
External Clock. Used for serial control interface to clock control data
in or out of the 73K321L.
RXCLK
23
O
Receive Clock. A clock which is 16 x1200, or 16 x 75 in V.23 mode,
or 16 x 300 baud data rate is output in V.21.
RXD
22
O/
Weak
Pull-up
Received Digital Data Output. Serial receive data is available on this
pin. The data is always valid on the rising edge of RXCLK when in
Synchronous mode. RXD will output constant marks if no carrier is
detected.
TXCLK
18
O
Transmit Clock. TXCLK is always active. In V.23 mode the output is
either a 16 x 1200 baud clock or 16 x 75 baud, in V.21 mode the clock
is 16 x 300 baud.
TXD
21
I
Transmit Digital Data Input. Serial data for transmission is input on
this pin. In Asynchronous modes (1200 or 300 baud) no clocking is
necessary.
ANALOG INTERFACE AND OSCILLATOR
RXA
27
I
Received modulated analog signal input from the phone line.
TXA
16
O
Transmit analog output to the phone line.
XTL1
XTL2
2
3
I
I
These pins are for the internal crystal oscillator requiring an 11.0592
MHz Parallel mode crystal and two load capacitors to Ground. XTL2
can also be driven from an external clock.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 73K322L-IH | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L | CCITT V.23, V.22, V.21 Single-Chip Modem(CCITT V.23, V.22, V.21單片Modem) |
| 73M223 | 1200 Baud FSK Modem |
| 73M223-CL | 1200 Baud FSK Modem |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 73K321L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K321L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.21 Single-Chip Modem |
| 73K322L | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IH | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
| 73K322L-IP | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:CCITT V.23, V.22, V.21 Single-Chip Modem |
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