XE5614L Просмотр технического описания (PDF) - Xecom
Номер в каталоге
Компоненты Описание
Список матч
XE5614L Datasheet PDF : 17 Pages
| |||
XE5614L PIN DESCRIPTIONS
PIN NAME DESCRIPTION
1
2
3
4-8
9
10
11
12
13
14
15
16
18
20
21
22
27-29
30
31-35
36
37
38
39
40
NC
AR
RXD
NC
\DTR
NC
\CTS
NC
TXD
\RTS
NC
\RI
TIP
RING
GND
AMP
N/C
OH
N/C
RESET
N/C
\DCD
\DSR
Vcc
No Internal Connection
Auxiliary Data/Voice Relay, Active High Output, TTL/CMOS. The AR signal goes high when ever the
modem is in the on-hook state. It can be connected to an external relay to switch control of the tele-
phone line between the modem and an auxiliary handset when.
Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD represents a
"mark" and a logic "Low" represents a "space".
No Internal Connection
Data Terminal Ready, Input, active Low, TTL. The "AT&D" command sets the function of \DTR. The
default, AT&D2, requires the host to assert \DTR to permit a modem link. The modem drops the call in
progress if \DTR is revoked and will not connect until \DTR is reasserted.
No Internal Connection
Clear to Send, Output, active Low, TTL/CMOS. \CTS provides the flow control output from the modem
when hardware flow control is selected. The modem revokes \CTS when the modem's input buffer is
full. The modem reasserts \CTS when the buffer can accept more data without a buffer overflow.
No Internal Connection
Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a "mark" and a
Low represents a "space", TTL.
Request to Send, input, active Low, TTL. The XE5614L uses \RTS for hardware flow control. When
\RTS is revoked; hardware flow control is enabled, and the modem will not place data on RXD.
No Internal Connection
Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring signal.
Tip connection to the phone line (RJ11 pin 3) from the internal DAA. The XE5614L is not sensitive to
the battery voltage polarity across Tip and Ring.
Ring connection to the phone line (RJ11 pin 4) from the internal DAA.
Ground (0 volts)
Audio Output function is set by L & M commands and the value in register S22. This output can drive a
minimum load of 300 ohms.
No Internal Connection
Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed. Hookswitch clo-
sure connects the modem to the telephone line. This signal is available only on the XE5614L.
No Internal Connection
Hardware reset pin, Input, active High, TTL. A high on Pin 36 initiates a hardware reset. An external
reset is not required or recommended. The Reset pulse must be held a minimum of 100 milliseconds.
No Internal Connection
Data Carrier Detect, Output Active Low, TTL/CMOS. The &C command sets the function of \DCD. In
the default state \DCD activates when a valid carrier is detected.
Data Set Ready, Output, active Low, TTL/CMOS. &S sets the \DSR function. In the default condition,
AT&S0, \DSR is forced true.
+5 Volts
XECOM
(3)
XE5614L
Share Link: 