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TSX5070FN
PROGRAMMABLE CODEC/FILTER COMBO 2ND GENERATION
TS5070
TS5071PROGRAMMABLE CODEC/FILTER
COMBO 2ND GENERATION
COMPLETE CODEC AND FILTER SYSTEM
INCLUDING : TRANSMIT AND RECEIVE PCM CHANNEL
FILTERS μ-LAW OR A-LAW COMPANDING CODER
AND DECODER RECEIVE POWER AMPLIFIER DRIVES
300 Ω 4.096 MHz SERIAL PCM DATA (max)
PROGRAMMABLE FUNCTIONS : TRANSMIT GAIN : 25.4 dB RANGE, 0.1 dB
STEPS RECEIVE GAIN : 25.4 dB RANGE, 0.1 dB
STEPS HYBRID BALANCE CANCELLATION FIL-
TER TIME-SLOT ASSIGNMENT: UP TO 64
SLOTS/FRAME 2 PORT ASSIGNMENT (TS5070) 6 INTERFACE LATCHES (TS5070)
–A OR μ-LAW ANALOG LOOPBACK DIGITAL LOOPBACK
DIRECT INTERFACE TO SOLID-STATE
SLICs
SIMPLIFIES TRANSFORMER SLIC, SINGLE
WINDING SECONDARY
STANDARD SERIAL CONTROL INTERFACE
80 mW OPERATING POWER (typ)
1.5mW STANDBY POWER (typ)
MEETS OR EXCEEDS ALL CCITT AND
LSSGR SPECIFICATIONS
TTL AND CMOS COMPATIBLE DIGITAL IN-
TERFACES
DESCRIPTIONThe TS5070 series are the second generation com-
bined PCM CODEC and Filter devices optimized
for digital switching applications on subscriber and
trunk line cards.
Using advanced switched capacitor techniques the
TS5070 and TS5071 combine transmit bandpass
and receive lowpass channel filters with a com-
panding PCM encoder and decoder. The devices
are A-law and μ-law selectable and employ a con-
ventional serial PCM interface capable of being
clocked up to 4.096 MHz. A number of programma-
ble functions may be controlled via a serial control
port.
Channel gains are programmable over a 25.4 dB
range in each direction, and a programmable filter
is included to enable Hybrid Balancing to be ad-
justed to suit a wide range of loop impedance con-
ditions.
Both transformer and active SLIC interface circuits
with real or complex termination impedances can
be balanced by this filter, with cancellation in ex-
cess of 30 dB being readily achievable when meas-
ured across the passband against standard test ter-
mination networks.
To enable COMBO IIG to interface to the SLIC con-
trol leads, a number of programmable latches are
included ; each may be configured as either an in-
put or an output. The TS5070 provides 6 latches
and the TS5071 5 latches.
TS5070 PIN FUNCTIONALITY (PLCC28)
TS5070 FUNCTIONAL DIAGRAM
TS5070 - TS5071
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
TS5070 - TS5071
PIN CONNECTIONSPOWER SUPPLY, CLOCK
TS5070 - TS5071
TRANSMIT SECTION
RECEIVE SECTION
TS5070 - TS5071
