XE924 Ver la hoja de datos (PDF) - Xecom
Número de pieza
componentes Descripción
Lista de partido
XE924 Datasheet PDF : 19 Pages
| |||
XE924 PIN CONFIGURATION
SIGNAL
RGND
PINS
1, 3, 5, 7, 9, 10,
39, 43, 44, 46,
48, 50, 52
DESCRIPTION
RFGND provides the common reference point for all high
frequency signals.
RESERVED
VDD
2, 4, 6, 8, 11,12,
13, 30, 31, 45
47, 49,51
14
These pins are reserved for future use. No connections
should be made to these pins.
VDD provides power to the 900 MHz transceiver.
DGND
15
DGND provides the ground reference for the modem and
communications controller circuitry in the XE924.
/RST_VPP
16
RST_PV provides a hardware reset line for the XE924’s
communications controller.
VCC
17
VCC provides power to the communications controller and
modem circuitry.
RA3
18
Programmable I/O pin from the embedded communications
controller.
/DSR
19
/DSR is the Data Set Ready input to the communications
controller. This pin is normally tied to /MDSR, pin 20
/MDSR
RXD
/MRXD
20
/MDSR supplies the Data Set Ready output from the modem.
/MDSR is an active low output. This pin is normally tied to
/DSR, pin 19.
21
RXD is the serial data input to the communications controller.
This pin is normally tied to /MRXD, pin 22.
22
/MRXD is the serial data output from the modem in the
XE924. A Mark condition on /MRXD is active low. This pin
is normally tied to RXD, pin 21.
TXD
23
TXD is the serial data output from the communications
controller. It is normally tied to /MTXD, pin 24
/MTXD
/RI
24
/MTXD is the serial data input to the modem in the XE924. A
Mark condition on /MRXD is active low. TXD is normally tied
to /MTXD, pin 23
25
/RI provides the Ring Indication input to the communications
controller. /RI is normally tied to Pin 26
XECOM
(4)
XE924
Share Link: 