ZL30226/GA ZARLINK [Zarlink Semiconductor Inc], ZL30226/GA Datasheet - Page 38
ZL30226/GA
Manufacturer Part Number
ZL30226/GA
Description
4/8/16 Port IMA/TC PHY Device for xDSL
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL30226GA.pdf
(141 pages)
- Current page: 38 of 141
- Download datasheet (802Kb)
In CTC mode, when using the Fixed algorithm, the Stuff event is periodic and will appear in the same IMA frame,
once every 2048 cells, on each link that is part of the IMA Group.
In CTC mode, when using the Adaptive algorithm, the Stuff event will occur at an average rate of once every 2048
cells on each link and may not occur in the same IMA Frame on all the links. The reference link has one Stuff event
every 2048 cells.
In ITC mode, the Stuff event is determined using the adaptive algorithm that relates the level of the internal TX Link
FIFO with that of the TX Link FIFO of the Reference link. The reference link has one Stuff event every 2048 cells.
The state of bits 7 and 15 in the TX IMA Control (0x0321-0x0324) register determines whether a Stuff indication is
generated in the first or first four frames preceding a Stuff event.
2.4.5
The ZL30226/7/8 computes the internal TX IMA Data Cell Rate (IDCR) for each IMA Group. The cell rate for the IMA
Group reference link, specified in the TX Group Control Mode (0x0300-0x0307) register, is integrated over a
programmable period of time. The integration period is programmed in the TX IDCR Integration register and the
value for T1 or E1 services is indicated in Table 1.
Alternately, the integration period can be determined using the following equation:
The optimum performance will be reached when selecting an integration period which results in a number of cells
per integration period which is close to an integer number of cells. As example, for a cell rate equivalent to E1
service (30 timeslots per frame with a frame rate of 8 KHz).
IMA Data Cell Rate
NumberofCells = 94.97 = [30bytes
NumberofCells(perperiod) = [CellRate(persecond)] [IntegrationPeriod(insecond)]
SHDSL (E1 30
SHDSL (T1 24
TDM Mode
channels)
channels)
Table 1 - IDCR Integration Register Value
Zarlink Semiconductor Inc.
ZL30226/7/8
!
8KHz/(53bytespercells)] [(
TX IDCR Integration register
38
Preferred Value
2
2
(50 MHz)
19
20
clocks
clocks
2
20)
!
1/(50MHz)]
Data Sheet
Related parts for ZL30226/GA
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Zarlink Semiconductor Inc [TV IF PREAMPLIFIER]
Manufacturer:
Zarlink Semiconductor
Datasheet:
Part Number:
Description:
Satellite Channel Decoder
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Power Factor Controller
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
CMOS/SNOS NVSRAM HIGH PERFORMANCE 8 K x 8 NON-VOLATILE STATIC RAM
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Dual stage IF amplifier for cable tuners
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Synthesized Broadband Converter with Programmable Power
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Cable Tuner Front End LNA with AGC
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Front End Power Splitter with AGC
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
1.3GHz Dual Wideband Logarithmic Amplifier
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
Wide Dynamic Range Image Reject MOPLL
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND PLL FM DETECTOR FOR SATELLITE TV
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LINEAR FM DETECTOR FOR SATELLITE TV
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LOG IF STRIP AMPLIFIER
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
WIDEBAND LOG IF STRIP AMPLIFIER
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet:
Part Number:
Description:
THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
Manufacturer:
ZARLINK [Zarlink Semiconductor Inc]
Datasheet: