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

X  

TP3155 Fiches technique(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce TP3155
Description  TP3155 Time Slot Assignment Circuit
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

TP3155 Fiches technique(HTML) 5 Page - National Semiconductor (TI)

  TP3155 Datasheet HTML 1Page - National Semiconductor (TI) TP3155 Datasheet HTML 2Page - National Semiconductor (TI) TP3155 Datasheet HTML 3Page - National Semiconductor (TI) TP3155 Datasheet HTML 4Page - National Semiconductor (TI) TP3155 Datasheet HTML 5Page - National Semiconductor (TI) TP3155 Datasheet HTML 6Page - National Semiconductor (TI) TP3155 Datasheet HTML 7Page - National Semiconductor (TI) TP3155 Datasheet HTML 8Page - National Semiconductor (TI) TP3155 Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 10 page
background image
Functional Description
OPERATING MODES
The TP3155 control interface requires an 8-bit serial control
word which is compatible with the TP3020TP3021 and
29102911 CODECs Two bits X and R define which of the
two groups of frame sync outputs FSX0toFSX3orFSR0to
FSR3 is affected by the control word and a 6-bit assign-
ment field specifies the selected time slot from 0 to 31 A
frame sync output is active-high for one time slot which is
always 8 cycles of BCLK A frame may consist of any num-
ber of time slots up to 32 If a timeslot is assigned which is
beyond the number of time slots in a frame the FSX or FSR
output to which it was assigned will remain inactive
Two modes of operation are available Mode 1 is for sys-
tems requiring different time slot assignments for the trans-
mit and receive direction of each channel Mode 1 is select-
ed by leaving pin 9 (MODE) open-circuit or connecting it to
VCC In this case Pin 13 is the RSYNC input which defines
the start of each receive frame and the four outputs
FSR0–FSR3 are assigned with respect to RSYNC The
XSYNC input defines the start of each transmit frame and
outputs FSX0–FSX3 are assigned with respect to XSYNC
XSYNC may have any phase relationship with RSYNC In-
puts CH0 and CH1 select the channel from 0 to 3 (see
Table Ia)
Mode 2 provides the option of assigning all 8 frame sync
outputs with respect to the XSYNC input Mode 2 is select-
ed by connecting pin 9 (MODE) to GND This makes the
TP3155 TSAC useful for either an 8-channel undirectional
controller or for systems in which the transmit and receive
directions of each channel are always assigned to the same
time slot as the other ie the FSX and FSR inputs on the
COMBO CODECFilter are hard-wired together In this
case logical selection of the channel to be assigned is
made via inputs CH0 CH1 and CH2 (see Table Ib)
POWER-UP INITIALIZATION
During power-up all frame sync outputs FSX0–FSX3 and
FSR0–FSR3 are inhibited and held low No outputs will go
active until a valid time slot assignment is made
LOADING CONTROL DATA
During the loading of control data the binary code for the
selected channel must be set on inputs CH0 and CH1 (and
CH2 in mode 2) see Tables Ia and Ib
Control data is clocked into the DC input on the falling
edges of CLKC while CS is low
A new time slot assignment is transferred to the selected
assignment register on the high going transition of CS The
new assignment is re-synchronized to the system clock
such that the new FS output pulses will start at the next
complete valid time slot after the rising edge of CS
TIME SLOT COUNTER OPERATION
At the start of TS0 of each transmit frame defined by the
first falling edge of BCLK after XSYNC goes high the trans-
mit time slot counter is reset to 000000 and begins to incre-
ment once every 8 cycles of BCLK Each count is compared
with the 4 transmit assignment registers and on finding a
match a frame sync pulse is generated at that FSX output
Similarly the first falling edge of BCLK after RSYNC goes
high defines the start of receive TS0
and outputs
FSR0–FSR3 are generated with respect to TS0 when the
receive time slot counter matches the appropriate receive
assignment register
TSX OUTPUT
In mode 1 (separate transmit and receive assignments) this
output pulls low whenever any FSX output pulse is being
generated In mode 2 this output pulls low whenever any
FSX or FSR output is being generated At all other times it is
open-circuit allowing the TSX outputs of a number of
TSACS to be wire-ANDed together with a common pull-up
resistor This signal can be used to control the TRI-STATE
enable input of a line driver to buffer the transmit PCM bus
from the CODECFilters to the backplane
TABLE Ia Control Mode 1
(TP3020TP3021 Compatible)
X
R
T5
T4
T3
T2
T1
T0
X is the first bit clocked into the DC input
Control Data Format
T5
T4
T3
T2
T1
T0
Time Slot
000000
0
000001
1
000010
2
011110
30
011111
31
1
X
X
X
X
X
(Note 1)
CH1
CH0
Channel Selected
0
0
Assign to FSx0 andor FSR0
0
1
Assign to FSx1 andor FSR1
1
0
Assign to FSx2 andor FSR2
1
1
Assign to FSx3 andor FSR3
X
R
Action
0
0
Assign time slot to both selected FSX and FSR
0
1
Assign time slot to selected FSX only
1
0
Assign time slot to selected FSR only
1
1
Disable both selected FSX and FSR
TABLE Ib Control Mode 2
CH2
CH1
CH0
Channel Selected
0
0
0
Assign to FSX0
0
0
1
Assign to FSX1
0
1
0
Assign to FSX2
0
1
1
Assign to FSX3
1
0
0
Assign to FSR0
1
0
1
Assign to FSR1
1
1
0
Assign to FSR2
1
1
1
Assign to FSR3
X
R
Action
00
0
1
Assign time slot to selected output
10
(
1
1
Disable selected output
Note 1
When T5 e 1 then the appropriate FSX or FSR output is inactive
5


Numéro de pièce similaire - TP3155

FabricantNo de pièceFiches techniqueDescription
logo
Shenzhen Tianyuan Semic...
TP3109A TPOWER-TP3109A Datasheet
715Kb / 10P
   9-channel LED drive control dedicated circuit
TP3112A TPOWER-TP3112A Datasheet
1Mb / 10P
   12-channel LED drive control dedicated circuit
More results

Description similaire - TP3155

FabricantNo de pièceFiches techniqueDescription
logo
Samsung semiconductor
KT8555 SAMSUNG-KT8555 Datasheet
96Kb / 6P
   TIME SLOT ASSIGNMENT CIRCUIT
S5T8555 SAMSUNG-S5T8555 Datasheet
85Kb / 10P
   TIME SLOT ASSIGNMENT CIRCUIT
logo
Motorola, Inc
MC145601 MOTOROLA-MC145601 Datasheet
45Kb / 1P
   Time Slot interchange circuit
logo
List of Unclassifed Man...
IR3C07 ETC1-IR3C07 Datasheet
232Kb / 4P
   Pin Assignment
PVP-2150 ETC1-PVP-2150 Datasheet
181Kb / 2P
   pin assignment
logo
Sames
SA8702 SAMES-SA8702 Datasheet
28Kb / 6P
   BLOCK MODE TIME SLOT ALLOCATION CIRCUIT
logo
Toshiba Semiconductor
TMP47C1270 TOSHIBA-TMP47C1270 Datasheet
635Kb / 23P
   PIN ASSIGNMENT
logo
American Accurate Compo...
TIL81 AAC-TIL81 Datasheet
2Mb / 4P
   SWITCHING TIME TEST CIRCUIT
logo
P-tec Corporation
PT322435-TLMWD-E25C P-TEC-PT322435-TLMWD-E25C Datasheet
2Mb / 30P
   Input / Output Terminals Pin Assignment
logo
Sanken electric
LC5565LD SANKEN-LC5565LD Datasheet
297Kb / 10P
   Integrated on-time control circuit
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


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