FO-50RA
FO-70RA
5 – 7
FM209 (IC4) Hardware Interface Signals
Pin Signals – 128-Pin TQFP
Pin No.
Signal Name
I/O Type
Pin Description
1
SR4IN/RESERVED
MI
Modem Interconnect
2
SR3OUT/RESERVED
MI
Modem Interconnect
3
EYESYNC
OA
Eye Pattern Circuit
4
EYECLK
OA
Eye Pattern Circuit
5
RXD
OA
DTE serial interface
6
SR1IO
MI
Modem Interconnect
7
NC
—
No Connection
8
EYEXY
OA
Eye Pattern Circuit
9
SR4OUT
MI
Modem Interconnect
10
VDD1
PWR
3.3V Digital Supply for DSP
11
RLSD#
OB
DTE Serial Interface
12
DCLK
OB
DTE Serial Interface
13
EN85#
IA
Host Parallel Interface
14
GPI0
IA
Host Parallel Interface
15
RTS#
IA
DTE Serial Interface
16
DGND1
GND
DSP Digital Ground
17
TXD
IA
DTE Serial Interface
18
SA1CLK
MI
Modem Interconnect
19
RS4
IB
Host Parallel Interface
20
RS3
IB
Host Parallel Interface
21
RS2
IB
Host Parallel Interface
22
RS1
IB
Host Parallel Interface
23
RS0
IB
Host Parallel Interface
24
YCLK
I
Modem Interconnect
25
IACLK
MI
Modem Interconnect
26
IA1CLK
MI
Modem Interconnect
27
CTRLSIN S/NC
MI
Modem Interconnect
28
RESERVED/NC
MI
Modem Interconnect
29
SOUT S/NC
MI
Modem Interconnect
30
SIN S/NC
MI
Modem Interconnect
31
FSYNC S/NC
MI
Modem Interconnect
32
IARESET S#/NC
MI
Modem Interconnect
33
AGND1
GND
IA Analog Ground
34
LINEIN S/NC
I
Line Interface
35
MICP S/NC
I
Microphone Input
36
MICM S/NC
I
Microphone Input
37
MICBIAS S/NC
O
Microphone Bias Output
38
NC
—
No Connection
39
NC
—
No Connection
40
VREF S/NC
MI
Modem Interconnect
41
VC S/NC
MI
Modem Interconnect
42
VAA S/NC
PWR
5V IA Analog power
43
LINEOUT S/NC
O
Line Interface
44
NC
—
No Connection
45
AGND2
GND
IA Analog Ground
46
SPKRP S/NC
O
Speaker Interface Output
47
SPKRM S/NC
O
Speaker Interface Output
48
AVDD S/NC
PWR
5V IA Digital power
49
RESERVED/NC
MI
Modem Interconnect
50
ICLK S/NC
MI
Modem Interconnect
51
MCLK P
MI
Modem Interconnect
52
CTRLSIN P
MI
Modem Interconnect
53
RESERVED
MI
Modem Interconnect
54
SOUT P
MI
Modem Interconnect
55
SIN P
MI
Modem Interconnect
56
FSYNC P
MI
Modem Interconnect
57
IARESET P#
MI
Modem Interconnect
58
AGND3
GND
IA Analog Ground
59
NC
—
No Connection
60
LINEIN P
I
Line Interface
61
MICP P
I
Microphone Input
62
MICM P
I
Microphone Input
63
MICBIAS P
O
Microphone Bias Output
64
NC
—
No Connection
65
NC
NC
No Connection
66
VREF P
MI
Modem Interconnect
67
VC P
MI
Modem Interconnect
68
VAA P
PWR
5V Analog Supply for IA
69
LINEOUT P
O
Line Interface
70
AGND4
GND
IA Analog Ground
71
SPKRP P
O
Speaker Interface Output
Summary of Contents for FO-50
Page 12: ...1 10 FO 50RA FO 70RA M E M O ...
Page 45: ...FO 50RA FO 70RA 3 14 M E M O ...
Page 67: ...FO 50RA FO 70RA Control PWB parts layout Top side 6 7 ...
Page 68: ...FO 50RA FO 70RA Control PWB parts layout Bottom side 6 8 ...
Page 71: ...FO 50RA FO 70RA TEL LIU PWB parts layout Top side 6 11 ...
Page 72: ...FO 50RA FO 70RA 6 12 TEL LIU PWB parts layout Bottom side ...