參數(shù)資料
型號(hào)： 73K321L
廠商： TDK Corporation
英文描述： Miniature Switch, High Precision
中文描述： 國(guó)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(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 140K
代理商： 73K321L
73K321L
CCITT V.23, V.21
Single-Chip
4
PARALLEL MICROPROCESSOR CONTROL INTERFACE
(continued)
NAME
PLCC/DIP
PIN NUMBER
13
TYPE
DESCRIPTION
WR
I
Write. A low on this informs the 73K321L that data is available on
AD0-AD7 for writing into an internal register. Data is latched on the
rising edge of
WR
. No data is written unless both
WR
and the latched
CS
are low.
SERIAL MICROPROCESSOR CONTROL INTERFACE
AD0-AD2
4-6
I
Register Address Selection. These lines carry register addresses and
should be valid during any read or write operation.
DATA (AD7)
11
I/O
Serial Control Data. Data for a read/write operation is clocked in or
out on the falling edge of the EXCLK pin. The direction of data flow is
controlled by the
RD
pin.
RD
low outputs data.
RD
high inputs data.
RD
14
I
Read. A low on this input informs the 73K321L that data or status
information is being read by the processor. The falling edge of the
RD
signal will initiate a read from the addressed register. The
RD
signal must continue for eight falling edges of EXCLK in order to read
all eight bits of the referenced register. Read data is provided LSB
first. Data will not be output unless the
RD
signal is active.
WR
13
I
Write. A low on this input informs the 73K321L that data or status
information has been shifted in through the DATA pin and is available
for writing to an internal register. The normal procedure for a write is
to shift in data LSB first on the DATA pin for eight consecutive falling
edges of EXCLK and then to pulse
WR
low. Data is written on the
rising edge of
WR
.
NOTE: The Serial Control mode is provided by tying ALE high and
CS
low. In this configuration AD7 becomes
DATA and AD0, AD1 and AD2 become the address only. See the Serial Control Timing diagrams on
page 18
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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