FM336Plus
V.34/Group 3 High Performance Fax Modem Family
/RTS
/CTS
TXD
TDCLK
XTCLK
V.24
Interface
/RLSD
RXD
/RDCLK
/DTR
/DSR**
/RI*
XTLI
XTL0
Crystal
OR
CLKIN
Oscillator
RIN
TXA1
TXA2
OH
RINGD
/TALK
telephone
line
TIP
Line
Interface
RING
/RD
/WR
/CS
D7:0
FM336Plus
Modem Family
EYEXY
EYESYNC
EYECLK
Optional
Eye Pattern
Generator
Host
Processor
RS4:0
IRQ
/RESET
TXRQ*
RXRQ**
SPKR
Speaker
Amplifier
+5V
+3.3V
AGND
DGND
Power Supply
* Selectable; TXRQ output replaces /RI output.
** Selectable; RXRQ output replaces /DSR output.
Figure 1. Functional Interface Signals
8
Conexant
101361A