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參數(shù)資料
| 型號(hào)： | 73K321L-IH |
| 廠商： | TDK Corporation |
| 英文描述： | CCITT V.23, V.21 Single-Chip Modem |
| 中文描述： | 國際電話電報(bào)諮詢委員會(huì).23，.21單芯片調(diào)制解調(diào)器 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 140K |
| 代理商： | 73K321L-IH |
73K321L
CCITT V.23, V.21
Single-Chip Modem
3
PIN DESCRIPTION
POWER
NAME
PLCC/DIP
PIN NUMBER
TYPE
DESCRIPTION
GND
28
I
System Ground.
VDD
15
I
Power supply input, 5V ±10%. Bypass with 0.1 and 22 μF capacitors
to GND.
VREF
26
O
An internally generated reference voltage. Bypass with 0.1 μF
capacitor to GND.
ISET
24
I
Chip current reference. Sets bias current for op-amps. The chip
current is set by connecting this pin to VDD through a 2 M
resistor.
ISET should be bypassed to GND with a 0.1μF capacitor.
PARALLEL MICROPROCESSOR CONTROL INTERFACE
ALE
12
I
Address latch enable. The falling edge of ALE latches the address on
AD0-AD2 and the chip select on
CS
.
AD0-AD7
4-11
I/O
Address/data bus. These bidirectional tri-state multi-plexed lines carry
information to and from the internal registers.
CS
20
I
Chip select. A low during the falling edge of ALE on this pin allows a
read cycle or a write cycle to occur. AD0-AD7 will not be driven and
no registers will be written if
CS
(latched) is not active. The state of
CS
is latched on the falling edge of ALE.
CLK
1
O
Output clock. This pin is the output of the crystal oscillator frequency
only in the 73K321.
INT
17
O
Interrupt. This open drain output signal is used to inform the
processor that a detect flag has occurred. The processor must then
read the detect register to determine which detect triggered the
interrupt.
INT
will stay low until the processor reads the detect register
or does a full reset.
RD
14
I
Read. A low requests a read of the 73K321L internal registers. Data
cannot be output unless both
RD
and the latched
CS
are active or
low.
RESET
25
I
Reset. An active high signal high on this pin will put the chip into an
inactive state. All control register bits (CR0, CR1, Tone) will be reset.
The output of the CLK pin will be set to the crystal frequency. An
internal pull down resistor permits power on reset using a capacitor to
VDD.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 73K321L-IP | CCITT V.23, V.21 Single-Chip Modem |
| 73K321L | Miniature Switch, High Precision |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| 73K324BL | 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Single-Chip Modem w/ Integrated Hybrid |
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