Sharp FO-1470 Service Manual page 61

[Signals for status recognition according to input signals]
Signal Name
H:The handset is in the on-hook state.
RHS
L: The handset is in the off-hook state.
CI Incoming call (CI) detection signal
H: Door open.
DRSNS
L: Door close.
[Other signals]
Signal Name
TEL IN Receiving signal from line or modem
TEL OUT Transfer signal to line
SPOUT Speaker output signal
Transmission (DTMF) analog signal output
TXOUT
from modem
Reception (DTMF, others) analog signal input
RXIN
into modem
(Example: TEL speaking)
L1
CML
M
C
L2
B
CI
HANDSET
RX
TX
BIT7 BIT6 BIT5 BIT4 BIT3
DAC
L/O E SPKR E
IACR1 MIC GAIN
GAIN
TXRX LINEOUT
IACR2
LOOP ATTENUATION
IACR3
Function
Function
TEL/LIU PWB CONTROL PWB
TXOUT
RXIN
TELIN
TELMUTE
DTMFMUTE
TELOUT
SPEAKER
BIT2 BIT1 BIT0
ADC
L/I E MIC E
GAIN
MICBIAS
RXTXLOOP
SEL
LINE SEL
No. Signal Name (CNLIUA)
1 PE1
2 TEL OUT
3 TEL IN
4 TEL MUTE
5
CI
6 HS
7 CML
SP OUT
ENABLE
SPKRP-P
SP
DRIVER
MIC
GAIN
MICP
0,20,25,30dB
LINEIN
RCV VOL
LINE
DRIVER
LINEOUT
MUTE,0,
LINEOUT
–6,–12dB
ENABLE
TEL SPEAKING:
SPMUTE
FAX SENDING/RECEIVING:
Fig. 7
5 – 10
UX-510UA
FO-1470U
No. Signal Name (CNLIUA)
8 TXOUT
9 RXIN
10 RHS
11 DOOR SW
12
+5V
13
DG
+24V
14
INTEGRATED ANALOG
20415
RTLOOP
(0:1)
MIC ENABLE
(1:0)
(0:0)
DAC
(1:1)
DAC GAIN
0,6dB
MIC
ENABLE
1
MIC IN
LPF 0
ADC
LINE IN
ENABLE
ADC GAIN
1
LINE IN
0,–4dB
LPF 0
LNINSEL
(0:0)
(1:1)
(1:0)
BZOUT
CML HS
SPMUTE CI
CSWI
PESNS
FRSNS
FAX
ORGSNS
ENGINE
PSNS
DTMFMUTE
SCE114
RCVOL LEDON
VTHON
RHS
DRSNS
TXMUTE
TELMUTE
IA-RESET
SIN
SOUT