Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

AM79R79-1JC Fiches technique(PDF) 11 Page - Advanced Micro Devices

No de pièce AM79R79-1JC
Description  Ringing Subscriber Line Interface Circuit
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  AMD [Advanced Micro Devices]
Site Internet  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79R79-1JC Fiches technique(HTML) 11 Page - Advanced Micro Devices

Back Button AM79R79-1JC Datasheet HTML 7Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 8Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 9Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 10Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 11Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 12Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 13Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 14Page - Advanced Micro Devices AM79R79-1JC Datasheet HTML 15Page - Advanced Micro Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
SLIC Products
11
Table 2. User-Programmable Components
ZT is connected between the VTX and RSN pins. The fuse resistors are
RF, and Z2WIN is the desired 2-wire AC input impedance. When com-
puting ZT, the internal current amplifier pole and any external stray ca-
pacitance between VTX and RSN must be taken into account.
ZRX is connected from VRX to RSN. ZT is defined above, and G42L is the
desired receive gain.
RDC1, RDC2, and CDC form the network connected to the RDC pin.
ILOOP is the desired loop current in the constant-current region.
RDCR1, RDCR2, and CDCR form the network connected to the RDCR pin.
See Applications Circuit for these components.
CDCR sets the ringing time constant, which can be between 15 µs and
150 µs.
for high battery state
RD is the resistor connected from the RD pin to GND and RLTH is the
loop-resistance threshold between on-hook and off-hook detection. RD
should be greater than 56 k
Ω to guarantee detection occurs in the
Standby state. Choose the value of RD for high battery state; then use
the equation for RLTH to find where the threshold is for low battery.
Loop-Threshold Detect Equations
for high battery
This is the same equation as for RD above, except solved for RLTH.
for low battery
For low battery, the detect threshold is slightly higher, which avoids os-
cillating between states.
RLTH standby < RLTH active VBAT1 < RLTH active VBAT2, which guaran-
tees no unstable states under all operating conditions. This equation
shows at what resistance the standby threshold is; it is actually a cur-
rent threshold rather than a resistance threshold, which is shown by the
Vbat dependency.
Z
T
500 Z
2WIN
2R
F
()
=
Z
RX
Z
L
G
42L
------------
1000
Z
T
Z
T
500 Z
L
2R
F
+
()
+
--------------------------------------------------
=
R
DC 1
R
DC2
2500
I
LOOP
---------------
=
+
R
DC R1
R
DCR 2
+
3000
Iringlim
----------------------
=
C
DC
19 ms
R
DC 1
R
DC2
+
R
DC1 RDC 2
---------------------------------
=
C
DC R
R
DCR1
R
DC R2
+
R
DC R1RDCR2
----------------------------------------
• 150 µs
=
R
D
R
LTH
12.67
=
R
LTH
R
D
12.67
-------------
=
R
LTH
R
D
11.37
-------------
=
R
LTH
V
BAT1
10
915
-----------------------------
R
D
400
2R
F
=


Numéro de pièce similaire - AM79R79-1JC

FabricantNo de pièceFiches techniqueDescription
logo
Advanced Micro Devices
AM79R70 AMD-AM79R70 Datasheet
271Kb / 17P
   Ringing Subscriber Line Interface Circuit
AM79R70 AMD-AM79R70 Datasheet
355Kb / 20P
   Ringing Subscriber Line Interface Circuit
AM79R70-1JC AMD-AM79R70-1JC Datasheet
271Kb / 17P
   Ringing Subscriber Line Interface Circuit
AM79R70-1JC AMD-AM79R70-1JC Datasheet
355Kb / 20P
   Ringing Subscriber Line Interface Circuit
AM79R70-1SC AMD-AM79R70-1SC Datasheet
355Kb / 20P
   Ringing Subscriber Line Interface Circuit
More results

Description similaire - AM79R79-1JC

FabricantNo de pièceFiches techniqueDescription
logo
Advanced Micro Devices
AM79R70 AMD-AM79R70_1 Datasheet
355Kb / 20P
   Ringing Subscriber Line Interface Circuit
AM79R70 AMD-AM79R70 Datasheet
271Kb / 17P
   Ringing Subscriber Line Interface Circuit
logo
Ericsson
PBL38620-2 ERICSSON-PBL38620-2 Datasheet
135Kb / 16P
   Subscriber Line Interface Circuit
PBL3764 ERICSSON-PBL3764 Datasheet
1Mb / 17P
   SUBSCRIBER LINE INTERFACE CIRCUIT
logo
Infineon Technologies A...
PBL38620 INFINEON-PBL38620 Datasheet
1Mb / 46P
   Subscriber Line Interface Circuit
Rev. 2.0, Apr. 2005
PBL38640 INFINEON-PBL38640 Datasheet
1Mb / 51P
   Subscriber Line Interface Circuit
Rev. 2.0, Apr. 2005
logo
Ericsson
PBL38621-2 ERICSSON-PBL38621-2 Datasheet
130Kb / 16P
   Subscriber Line Interface Circuit
PBL38630-2 ERICSSON-PBL38630-2 Datasheet
134Kb / 16P
   Subscriber Line Interface Circuit
PBL38640-2 ERICSSON-PBL38640-2 Datasheet
138Kb / 16P
   Subscriber Line Interface Circuit
logo
STMicroelectronics
L3037 STMICROELECTRONICS-L3037 Datasheet
267Kb / 22P
   SUBSCRIBER LINE INTERFACE CIRCUIT
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com