UX-68DE
FO-78DE
(4) Modem (FM209V) blockFEATURES
INTRODUCTIONYGroup 3 facsimile transmission/reception
The CONEXANT FM209V MONOFAX modem is a synchronous 9600- ITU-T V.29, V.27 ter, T.30, V.21 Channel 2, T.4
bits per second (bps) half-duplex modem with error detection -and DTMFITU-T V.17 and V.27 ter short train
reception. It has low power consumption and requires a single +5V and
- HDLC framing at all speeds
+3.3V DC power supply. The modem is housed in a single VLSI device
- Receive dynamic range: 0 dBm to -43 dBm
package.
The modem can operate over the public switched telephone network- Automatic adaptive equalization
(PSTN) through line terminations provided by a data access arrange-- Fixed and programmable digital compromise equalization
ment (DAA).
- DTMF detect and tone detect
The FM209V is designed for use in Group 3 facsimile machines.
The modem satisfies the requirements specified in CCITT recommen-- ITU-T V.21 Channel 2 FSK 7E Flag Detect
dations V.29, V.27 ter, V.21 Channel 2 and T.4, and meets the binary- Ring detector
signaling requirements of T.30.
- Programmable transmits level
The modem can operate at 9600, 7200, 4800, 2400, or 300 bps, and
also includes the V.27 ter short training sequence option.- Programmable single/dual tone transmission
The modem can also perform HDLC framing according to T.30 at 9600,
YV.23 and Type I Caller ID
7200, 4800, 2400, or 300 bps.
- Full-duplex modes:
The modem features a programmable DTMF receiver and three pro-
grammable tone detectors which operate concurrently with the VTX = 75 bps. RX = 1200 bps.21
channel 2 receiver.TX = 1200 bps. RX = 75 bps
The voice mode allows the host computer to efficiently transmit and
- Half-duplex mode:
receive audio signals and messages.
The modem is available in either a 128-pin plastic quad flat pack (TQFP).TX = RX = 1200 bps
General purpose input/output (GPIO) pins are available for host as- Serial and parallel data modes
signment in the 128-pin TQFP.
- Programmable parallel data mode
The modemOs small size, single voltage supply, and low power con-
- 5, 6, 7 or 8 data bits
sumption allow the design of compact system enclosures for use in both
office and home environments.- 1 or 2 Stop bits
MONOFAX is a registered trademark of CONEXANT.- Mark, Space, Even, or Odd Parity
TXDOFFHOOK- Break function
RXDTALK- Transmitter squelch
DCLKRINGD
USART- Compromise equalizerDAA
(OPTIONAL)RTS#LINEOUTTELEPHONE
YProgrammable interface memory interruptLINE
CTS#LINEIN
YEight General Purpose Input (GPI) and eight General Purpose Out-
RLSD#
put (GPO) pins for host assignment
SPKRP
SPEAKER
SPKRMDRIVERYDTE interface: two alternate ports
(OPTIONAL)
READ#- Selectable microprocessor bus (6500 or 8085)
WRITE#FM209V
- ITU-T V.24 (EIA/TIA-232-E compatible) interfaceMONOFAX
DATA BUSMODEM
YTTL and CMOS compatible
ADDR BUS
CS#Y3.3V/5V operation
HOST(DTE)DECODER
RESET#YPower consumption
PROCESSOR
IRQ1#
- Operating Mode: 200 mW (Basic), 275 mW (-V option). 300 mW
IRQ2#
(-VS option)
EYEXY
EYE- Sleep Mode: 1 ma (Basic. -V option and -VS option)
XTLIEYECLKPATTERN
GENERATORYPackagingCRYSTALXTLOEYESYNC
(OPTIONAL)
- 128-pin TQFP (thin quad flat pack)
+3.3VGND
+5V
POWER
SUPPLY
Fig. 5
5 � 6 |
ACEC
SHARP
