Si2168-A20
New Generation DVB-T2/T/C Digital TV Demodulator
Description
The Si2168 integrates DVB-T2, DVB-T, and DVB-C digital
demodulators into a single advanced CMOS technology
mixed-signal die for next generation terrestrial and legacy
cable TV standards. Leveraging Silicon Labs' proven digital
demodulation architecture, the Si2168 achieves excellent
reception performance while significantly minimizing
front-end design complexity, cost, and power dissipation.
Connecting the Si2168 to a terrestrial and cable hybrid TV
tuner or digital only tuner, such as Silicon Labs’ Si2176/56/
46 devices, results in a high performance and cost optimized
TV front-end solution.
Silicon Labs internally developed DVB-T2 demodulator can
accept a standard IF (36 MHz) or low-IF input and support
all modes specified by the DVB-T2 standard. Main features
of the DVB-T2 mode are 256 QAM with rotated
constellations, SISO and MISO support, FEF management,
fully autonomous signal acquisition including automatic L1
signalling parsing, 600 kHz acquisition range, support for all
pilot patterns, and DVB-T/T2 auto-detection. The DVB-T and
DVB-C demodulators are enhanced versions of proven and
broadly used Si2161/63/65/67 Silicon Labs devices.
The Si2168 offers an on-chip blind scanning algorithm for
the DVB-C standards as well as blind lock. The Si2168 can
use a crystal, as a reference clock, or be driven by an
external clock signal from the tuner.
The Si2168 programmable transport stream interface
provides a flexible range of output modes and is fully
compatible with all MPEG decoders or conditional access
modules to support any customer application.
Features
-
DVB-T2 (ETSI EN 302 755)
-
COFDM demodulator and FEC (LDPC + BCH)
decoder
-
Bandwidth: 1.7, 5, 6, 7 or 8 MHz (and extended BW)
-
Supports up to 255 PLP(s) and outputs the data PLP
plus the common PLP on a single TS
-
NorDig-T2 Unified v2.2.1 and D-Book 7.0 compliant
-
Firmware control (loaded in ROM)
DVB-T (ETSI EN 300 744)
-
COFDM demodulator and FEC decoder
-
NorDig Unified 2.2.1, D-Book 7.0 compliant
DVB-C (ETSI EN 300 429) / ITU J.83 Annex A/C
-
QAM demodulator and FEC decoder
-
1 to 7.2 MSymbol/s
-
C-Book compliant
I
2
C serial bus interfaces (master and host)
GPIOs and multi-purpose ports for independent AGCs
Firmware control for upgradeability
Flexible TS interface with serial or parallel single output
Fast lock times for all standards including DVB-T2
Only two power supplies: 1.2 and 3.3 V
Pin-to-pin and software compatibility with the Si2169
(superset for DVB-T2/T/C/S/S2)
7x7 mm, QFN-48 pin package, Pb-free/RoHS compliant
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Applications
iDTV: on-board or in a NIM
Advanced STB
PC-TV accessories
PVR, DVD, and Blu-Ray disc recorders
1.2, 3.3V
RESETB
DSP &
SYNCHRO
MP_A/_B/_C/_D
CTRL
GPIO_0
GPIO
TS_ERR/
GPIO_1
AGCs
DVB-C
DEMOD
ADC
FRONT
END
DVB-T2/T
DEMOD
MPEG TS
TC_ADC_P
TC_ADC_N
Ext. Clk or Xtal
VITERBI
INTERFACE
Silicon Labs
TV Tuner
(Si217x/5x/4x)
RS
TS_SYNC
TS_VAL
TS_CLK
TS_DATA
8
EQUAL-
IZER
LDPC
BCH
OSC
& PLL
CLK_IN_OUT
TUN_SDA
TUN_SCL
I
2
C
SWITCH
DVB-T2/T/C
FEC MODULE
Si2168
I
2
C
I/F
HOST_SDA
HOST_SCL
Digital Demodulator
Copyright © 2012 by Silicon Laboratories
HDTV MPEG S.o.C.
6.8.2012
EQUAL-
IZER
Si2168-A20
New Generation DVB-T2/T/C Digital TV Demodulator
Selected Electrical Specifications
(T
A
= –10 to 75 °C)
Parameter
General
Input clock reference
Supported XTAL frequency
Total power consumption
DVB-T2
1
DVB-T
2
DVB-C
3
Thermal resistance (
JA
)
Input ADC Sampling Clock
DVB-T2/T/C
Power Supplies
V
DD
_
VCORE
V
DD
_
VANA
V
DD
_
VIO
1.14
3.00
3.00
1.20
3.30
3.30
1.30
3.60
3.60
V
V
V
36 MHz IF/low-IF
—
56
65
MHz
2 layer PCB
4 layer PCB
4
16
—
—
—
—
—
—
—
420
190
180
35
23
30
30
—
—
—
—
—
MHz
MHz
mW
mW
mW
°C/W
°C/W
Test Condition
Min
Typ
Max
Unit
Notes:
1.
Highest power demodulation case: 8 MHz, 256 QAM, 32K FFT, CR=3/5, GI=1/128, PP7, C/N at picture failure.
2.
Highest power demodulation case: 8 MHz, 64QAM, IF Mode, 8K, Parallel TS Output.
3.
Highest power demodulation case: 6.9 Mbaud, 256 QAM, IF Mode, Parallel TS Output.
Pin Assignments (Pin-to-Pin Compatible with the Si2167 and Si2169)
TS_ERR/GPIO_1
26
XTAL_I/CLK_IN
VDD_VCORE
TS_DATA[7]
25
24 TS_DATA[6]
23 TS_DATA[5]
22 VDD_VIO
21 GND
20 VDD_VCORE
19 TS_DATA[4]
18 TS_DATA[3]
17 TS_DATA[2]
16 TS_DATA[1]
15 TS_DATA[0]/TS_SER
14 TS_CLK
13 TS_SYNC
1
MP_A
2
MP_B
3
GPIO_0
4
NC
5
RSVD
6
NC
7
VDD_VCORE
8
GND
9
VDD_VIO
10
SCL_HOST
11
SDA_HOST
12
TS_VAL
VDD_VANA
RESETB
XTAL_O
ADDR
MP_D
MP_C
GND
27
36
NC 37
NC 38
NC 39
NC 40
TC_ADC_P 41
TC_ADC_N 42
NC 43
CLK_IN_OUT 44
SDA_MAST 45
SCL_MAST 46
GND 47
VDD_VCORE 48
GND
35
34
33
32
31
30
29
28
Si2168
(GND_PAD)
QFN-48
7x7mm
Selection Guide
Part #
Si2168-A20-GM/R
Description
Terrestrial and Cable Digital TV Demodulator for DVB-T2/T/C, 7x7 mm QFN-48
Digital Demodulator
Copyright © 2012 by Silicon Laboratories
6.8.2012
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.
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