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PDF ZL10355 Data sheet ( Hoja de datos )
| Número de pieza | ZL10355 | |
| Descripción | Nordig Unified DVB-T COFDM Terrestrial Demodulator | |
| Fabricantes | Zarlink Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ZL10355 (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
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Features
• Compliant with ETSI 300 744 DVB-T, Unified
Nordig and DTG performance specifications
• High performance with fast fully blind acquisition
and tracking capability
• Low power consumption: less than 0.32 W, and
eco-friendly standby and sleep modes
• Digital filtering of adjacent channels
www.DataShee•t4US.cionmgle 8 MHz SAW filter for 6, 7 & 8 MHz OFDM
• Superior single frequency network performance
• Fast AGC to track out signal fades
• Good Doppler tracking capability
• Enhanced frequency capture range to include
triple offsets
• External 4 MHz clock or single low-cost
20.48 MHz crystal, tolerance up to +/-200 ppm
• Automatic mode (2 K/8 K), guard and spectral
inversion detection
• Very low driver software overhead due to on-chip
state-machine control
• Novel RF level detect facility via a separate ADC
• Pre and post Viterbi-decoder bit error rates, and
uncorrectable block count
ZL10355
Nordig Unified DVB-T COFDM
Terrestrial Demodulator for PC-TV
and Hand-held Digital TV (DTV)
Data Sheet
August 2005
Ordering Information
ZL10355QCG
ZL10355QCG1
ZL10355QCF
ZL10355QCF1
64 Pin LQFP
64 Pin LQFP*
64 Pin LQFP
64 Pin LQFP*
Trays, Bake & Drypack
Trays, Bake & Drypack
Trays, Bake & Drypack
Trays, Bake & Drypack
*Pb Free Matte Tin
-40°C to +85°C
Applications
• Digital terrestrial set-top boxes
• Integrated digital televisions
• Personal video recorders
• PC-TV receivers
• Portable applications
Description
The ZL10355 is a superior fourth generation fully
compliant ETSI ETS300 744 COFDM demodulator that
exceeds, with margin, the performance requirements
of all known DVB-T digital terrestrial television
standards, including Unified Nordig and DTG.
Figure 1 - Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2005, Zarlink Semiconductor Inc. All Rights Reserved.
1 page  
ZL10355
1.2 Pin Allocation
Pin Function Pin
1 Vss
2 Vdd
3 Vss
4 CLK1
5 DATA1
6 IRQ
7 CVdd
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8 Vss
9 RESET
10 SLEEP
11 STATUS
12
13 Vdd
14 Vss
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
Pin
Function
SADD1
33 Vdd
SADD0
CVdd
Vss
34 RFLEV
35 CLK2/GPP0
36 DATA2/GPP1
PLLVdd
PLLGND
XTI
XTO
37 CVdd
38 Vss
39 CVdd
40 Vss
Vss
PLLTEST
OSCMODE
AVdd
41 AGC2/GPP2
42 AGC1
43 GPP3
44 SMTEST
AGnd
VIN
VIN
45 Vdd
46 Vss
47 MOSTRT
AGnd
48 MOVAL
Table 1 - Pin Names - numeric
Data Sheet
Pin
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Function
MDO0
MDO1
MDO2
MDO3
MDO4
Vdd
Vss
MDO5
MDO6
MDO7
CVdd
Vss
MOCLK
BKERR
MICLK
CVdd
Function
AGC1
AGC2/GPP2
AGnd
AGnd
AVdd
BKERR
CLK1
CLK2/GPP0
CVdd
CVdd
CVdd
CVdd
Pin
42
41
29
32
28
62
4
35
7
19
37
39
Function Pin Function Pin
GPP3
43 PLLTEST
26
IRQ
MDO0
MDO1
MDO2
6 PLLVdd
49 RESET
50 RFLEV
51 SADD0
21
9
34
18
MDO3
MDO4
MDO5
52 SADD1
53 N/C
56 N/C
17
16
15
MDO6
57 N/C
12
MDO7
58 SLEEP
10
MICLK
63 SMTEST
44
MOCLK
61 STATUS
11
Table 2 - Pin Names - alphabetical order
Function
Vdd
VIN
VIN
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Vss
Pin
54
30
31
1
3
8
14
20
25
38
40
46
5
Zarlink Semiconductor Inc.
5 Page 
ZL10355
Data Sheet
2.9 Common Phase Error Correction
This module subtracts the common phase offset from all the carriers of the OFDM signal to minimize the effect of
the tuner phase noise on system performance.
2.10 Channel Equalization
This consists of two parts. The first part involves estimating the channel frequency response from pilot information.
Efficient algorithms have been used to track time-varying channels with a minimum of hardware.
The second part involves applying a correction to the data carriers based on the estimated frequency response of
the channel. This module also generates dynamic channel state information (CSI) for every carrier in every symbol.
2.11 Impulse Filtering
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ZL10355 contains several mechanisms to reduce the impact of impulse noise on system performance.
2.12 Transmission Parameter Signalling (TPS)
An OFDM frame consists of 68 symbols and a superframe is made up of four such frames. There is a set of TPS
carriers in every symbol and all these carry one bit of TPS. These bits, when combined, include information about
the transmission mode, guard ratio, constellation, hierarchy and code rate, as defined in ETS 300 744. In addition,
the first eight bits of the cell identifier are contained in even frames and the second eight bits of the cell identifier are
in odd frames. The TPS module extracts all the TPS data, and presents these to the host processor in a structured
manner.
2.13 De-Mapper
This module generates soft decisions for demodulated bits using the channel-equalized in-phase and quadrature
components of the data carriers as well as per-carrier channel state information (CSI). The de-mapping algorithm
depends on the constellation (QPSK, 16QAM or 64QAM) and the hierarchy (α = 0, 1, 2 or 4). Soft decisions for both
low- and high-priority data streams are generated.
2.14 Symbol and Bit De-Interleaving
The OFDM transmitter interleaves the bits within each carrier and also the carriers within each symbol. The
de-interleaver modules consist largely of memory to invert these interleaving functions and present the soft
decisions to the FEC in the original order.
11
Zarlink Semiconductor Inc.
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet ZL10355.PDF ] | |
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