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參數(shù)資料
| 型號(hào)： | XE1214B5 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1200bps Component Modem |
| 中文描述： | 的1200bps組件調(diào)制解調(diào)器 |
| 文件頁(yè)數(shù)： | 2/12頁(yè) |
| 文件大小： | 117K |
| 代理商： | XE1214B5 |
PIN NAME
I/O
DESCRIPTION
1
AA
O
AA goes low when the XE1214B5 is set in the auto-answer mode,
either by switch input AA DIS (pin 12) or register S0. If the XE1214B5
is not set to automatically answer (pin 12 held low, or S0 = 0), AAl
follows the incoming ring signal, going low for the 4 sec interval
between rings. For display purposes, this output may be used to drive
an external LED through a 330 ohm resistor.
2
\HS
O
This output, when low, indicates that the modem is in the high speed
(1200 bps) mode. When high, it indicates that the modem is in the low
speed (300 bps) mode. For display purposes, this output may be used
to drive an external LED through a 330 ohm resistor.
3
\CD
O
\CD indicates detection of a remote modem by going low. If the
connection is broken, or never established| \CD remains high. For
display purposes, this output may drive an external LED through a 330
ohm resistor.
4
\DTR
I
A low on \DTRallows the XE1214B5toll execute data call commands. If
this input is driven high during a data call, the XE1214B5 terminate the
data call, hang up the phone line and return to the command state.
5
RXDC
O
The XE1214B5 internal controller (see block diagram) uses RXDC to
transfer serial data in an asynchronous start/stop format at the data rate
selected by the terminal. This data is either the echo of commands
received from the terminal, or result codes generated by the controller
during processing of commands. It is normally high, and should be
"AND"ed with RXDM (pin 8) to form the received data to the terminal.
6
N/C
---
No Connection.
7
EHC
O
External Handset Control, when activated by the H1 Command, is used
to control an additional relay to allow an independent handset to be
connected to the telephone line. During data transmission, when the
relay in the internal DAA is closed (off-hook), this output is low. When
the internal relay is open (on-hook), this output is high,and may be used
to control an external relay to connect a telephone handset to the line.
8
RXDM
O
The internal modem processor of the XE1214B5B5 (see block diagram)
demodulates the received carrier and outputs data on this pin. A logic
low level is "space" and a logic high is "mark". This output is normally
high, and should be "AND"ed with RXDC (pin 5) to form the received
data signal to the terminal.
Pin Descriptions
2/XECOM
XE1214B5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XE1218A | Low Power single die FM receiver |
| XE1218AS000BF | Low Power single die FM receiver |
| XE1218 | FM 130 - 230 MHz LOW-POWER VHF RECEIVER |
| XE1276 | Compact 1200 bps Modem |
| XE1276A | Compact 1200 bps Modem |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XE1214E | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:MODEM |
| XE1218 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:FM 130 - 230 MHz LOW-POWER VHF RECEIVER |
| XE1218A | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Low Power single die FM receiver |
| XE1218AS000BF | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Low Power single die FM receiver |
| XE1276 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Compact 1200 bps Modem |
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