TS5070 Datasheet, PDF (5/32 Pages) STMicroelectronics – PROGRAMMABLE CODEC/FILTER COMBO 2ND GENERATION

TS5070 - TS5071
TRANSMIT SECTION
Name
Pin
Type
TS5070
FN
TS5071
N
Function
FS_X
I
22
15
Transmit
Frame Sync.
Description
Normally a pulse or squarewave waveform with an 8 kHz
repetition rate is applied to this input to define the start of
the transmit time-slot assigned to this device (non-delayed
data mode) or the start of the transmit frame (delayed
data mode using the internal time-slot assignment
counter).
VF_XI
I
28
20
Transmit
Analog
This is a high–impedance input. Voice frequency signals
present on this input are encoded as an A–law or µ–law
PCM bit stream and shifted out on the selected D_X pin.
D_X0
0
18
13
Transmit Data D_X1 is available on the TS5070 only, D_X0 is available on
D_X1
0
19
–
all devices. These transmit data TRI–STATE® outputs
remain in the high impedance state except during the
assigned transmit time–slot on the assigned port, during
which the transmit PCM data byte is shifted out on the
rising edges of BCLK.
TS_X0
0
20
14
Transmit
TS_X1 is available on the TS5070 only.
TS_X1
0
21
–
Time–slot
TS_X0 is available on all devices. Normally these opendrain
outputs are floating in a high impedance state except
when a time–slot is active on one of the D_X outputs, when
the apppropriate TS_X output pulls low to
enable a backplane line–driver. Should be strapped to
ground (GND) when not used.
RECEIVE SECTION
Name
Pin
Type
TS5070
FN
TS5071
N
Function
Description
FS_R
I
8
6
Receive Frame Normally a pulse or squarewave waveform with an 8 kHz
Sync.
repetition rate is applied to this input to define the start of
the receive time–slot assigned to this device (non-delayed
frame mode) or the start of the receive frame (delayed
frame mode using the internal time-slot assignment
counter.
VF_R0
0
2
2
Receive Analog The receive analog power amplifier output, capable of
driving load impedances as low as 300 Ω (depending on
the peak overload level required). PCM data received on
the assigned D_R pin is decoded and appears at this output
as voice frequency signals.
DR0
I
10
D_R1
I
9
7
Receive Data DR1 is available on the TS5070 only, DR0 is available on
–
all devices. These receive data input(s) are inactive
except during the assigned receive time–slot of the
assigned port when the receive PCM data is shifted in on
the falling edges of BCLK.
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