Figure 2.7 Block Diagram Of The Qslac Part - Samsung OFFICESERV 7100 Service Manual

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QSLAC (LE58QL021BVC) Part
The QSLAC part converts the analog voice signal into Digital PCM data and performs the
following functions including gain adjustment and conversion of frequency characteristics.
The major features of the QSLAC part are as follows:
AC termination(2W Return Loss adjustment)
Voice signal gain/Frequency characteristics/4W Return Loss adjustment
CODE/DECODE
Time Slot Assignment function
The following figure shows the QSLAC block diagram:
Analog
VIN
1
VOUT
1
VIN
2
VOUT
2
VIN
3
VOUT
3
VIN
4
VOUT
4
VREF
SLIC
CO1
1
CO2
1
CO3
1
CO4
1
CO5
1
CO1
1
CO2
1
CO3
1
CO4
1
CO5
1
CO1
1
CO2
1
CO3
1
CO4
1
CO5
1
CO1
1
CO2
1
CO3
1
CO4
1
CO5
1
CHCLK
2-14
Signal Processing
Channel 1(CH 1)
Signal Processing
Channel 2(CH 2)
Signal Processing
Channel 3(CH 3)
Signal Processing
Channel 4(CH 4)
Clock&
Reference
Circuits
SLIC
Inteface
(SLI)

Figure 2.7 Block Diagram of the QSLAC Part

Time Slot
Assigner
(TSA)
Microprocessor Interface
(MPI)
INT CS DIO DCLK
Microprocessor
© SAMSUNG Electronics Co., Ltd.
Dual/Dingle
PCM
Highway6
DXA
DRA
TSCA
DXB
DRB
TSCB
FS
PCLX
MCLK/E1
RST