stlc3040 STMicroelectronics, stlc3040 Datasheet - Page 21

• Manufacturer Part Number: stlc3040
• Description: Subscriber Line Interface Codec Filter, Cofislic
• Manufacturer: STMicroelectronics

For further details please see parameters I
(pag 34)
TESM3-TESM0 select the testmode.
Every test will be described in Chapter 6
CR6 sets current limitation values and off-hook
threshold in Active mode.
Reset Value: 51h
ILIM5-ILIM0 Set Current Limit in Active mode.
Current Limit is programmable in range of 0mA to
69.3mA in steps of 1.1mA.
ITHR Defines Off-Hook threshold value in Active
mode
Loop indication is set if a loop current greater
than 10mA or 13mA is detected.
FIXC, COFISLIC uses either fixed coefficients or
programmed ones.
CR7 sets current-limit value and Off-Hook thresh-
old in Stand-By mode.
Reset Value: 1Ch
PDSV5-PDSV0 Set Current Limit and Off-hook
PDSV5 PDSV4 PDSV3 PDSV2 PDSV1 PDSV0
ILIM5 ILIM4 ILIM3 ILIM2 ILIM1 ILIM0 ITHR FIXC
BIT7
BIT7
= 0h corresponds to 9.6/16 mA
= Fh corresponds to 9.6 mA
= 000000 corresponds to 0mA
= 111111 correspondso to 69.3mA
= 0 Threshold at 10mA
= 1 Threshold at 13mA
= 0 Programmed coefficients used
= 1 Fixed coefficients used (see paragraph
= 0h
= 1h
= 2h
= 4h
= 5h
= 7h
= 8h
= 9h
= Ah
= Ch
= Dh
= Eh
= Fh
4.5.2)
BIT6
BIT6
No-Test
TST-LEAK [CR8.1 = 0, CR5(3:0) = 01h]
TST-LKA [CR8.1 = 0, CR5(3:0) = 02h]
TST-800Hz
TST-TONE-CAL
TST-ALB
DON’T USED
TST-LINE-IMPDC
TST-LINE-IMPAC
TST-IRING
TST-PTTX
TST-TTXFILT
TST-ILIM
BIT5 BIT4
BIT5 BIT4
BIT3 BIT2
BIT3 BIT2
PDDIS RTEN
BIT1
BIT1
RNGGTH
BIT0
BIT0
threshold in Stand-by mode.
Programmable range is from 0mA to 69.3mA in
steps of 1.1mA.
PDDIS used for state setting as per table 14 (pag
45)
RTEN enables Ring-trip in test mode TST-IRING
CR8 sets synthesized feeding resistance, TTX
frequencies. The least significant bit sets the ring-
ing source: internal or external.
Reset Value: 00h
RFED2-RFED0 Values of the synthesized feeding
resistance‘.
DC Synthesis Value = 2 Rp + 2 50
TTX12 selects Teletax frequencies
TTXNO sets Battery Reversal for metering in-
stead of 16/12KHz pulse
SOREV selects hard or soft Battery Reversal
XRNG selects ringing source: internal or external
TMM enables sign modulation at 1kHz square
wave of measurement carried out during test mode
CR9 programs Ring frequency and amplitude.
Reset Value: 2F h
RVR fixes Ring Voltage Range
Reset Value is 65 V
RFED2 RFED1 RFED0 TTX12 TTXNO SOREV XRNG
BIT7
BIT7
RVR RNGF2 RNGF1 RNGF0 RNGV3 RNGV2 RNGV1 RNGV0
= 0000 corresponds to 0mA
= 1111 corresponds to 69.3mA
At reset the value will be 7.7mA.
= 0 Ring-trip disabled
= 1 Ring-trip enabled
= 0 16KHz teletax
= 1 12KHz teletax
=0 Metering with Teletax pulse
=1 Metering with Battery reversal
= 0 Hard Battery Reversal
= 1 Soft Battery Reversal
= 0 Internal Ring
= 1 Ring signal from EXT pin
= 0 No Modulation
= 1 Modulation enabled
= 0 Ring Amplitude = 34.4Vrms + RNGV [3:0] x
= 1 Ring Amplitude = 45Vrms + RNGV [3:0] x
2.039Vrms
2.66Vrms
BIT6
BIT6
BIT5
BIT5
rms
BIT4 BIT3
BIT4 BIT3
BIT2 BIT1
BIT2 BIT1
[RFED [2:0] + 1]
STLC3040
BIT0
BIT0
TMM
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