The M88DD3001 is a single-chip CTTB/DVB-C dual-standard demodulator with an integrated 64Mbit SDRAM. The device is fully compliant with China GB20600-2006 and Europe DVB-C standards, and supports terrestrial multi-carrier and single-carrier modes, single frequency network (SFN) as well as 6/7/8MHz bandwidths.
The device takes high or low IF from CTTB/DVB-C tuner or zero IF from CTTB tuner. It demodulates & FEC decodes the signal, and then outputs an MPEG TS stream in serial, parallel or DVB-CI format. The implementation of the device is fully done in a set of dedicated circuits with complete performance monitoring, thus excellent reception is ensured even under extreme conditions.
The device is available in a 64-pin LQFP package. It has very low power consumption and high integration, which makes it not only suitable for the dual-mode iDTV and STB, but also for the mobile and portable DTV systems.
| |
• |
CTTB Demodulator |
| |
|
- Fully compliant with GB 20600-2006 |
| |
|
- Single Frequency Network (SFN) compatible |
| |
|
- Multi-carrier and single-carrier modes supported |
| |
|
- 4QAM-NR, 4QAM, 16QAM, 32QAM and 64QAM supported |
| |
|
- FEC rates of 0.4, 0.6 or 0.8, and guard intervals (GI) of 420, 945 or 595 symbols |
| |
|
- Time de-interleaving supported (M = 240 or 720) |
| |
|
- 6 MHz, 7 MHz and 8 MHz channel bandwidths supported |
| |
|
- Single AGC for IF or Dual AGC for IF and RF gain control |
| |
|
- Timing & carrier recovery and correction; Symbol timing adjustment |
| |
|
- Channel estimation and equalization with strong echo cancellation |
| |
|
- Complete FEC including LDPC decoding and BCH decoding |
| |
|
- Adjacent channel interference and co-channel interference cancellation |
| |
|
- Auto spectrum inversion and Auto System Information detection |
| |
|
- Lock indication and accessible error rate information for signal quality monitoring |
| |
• |
DVB-C Demodulator |
| |
|
- Fully compliant with DVB-C and ITU J83 A/C specifications |
| |
|
- 16, 32, 64, 128 and 256-QAM supported |
| |
|
- Symbol rates of 0.87 Mbaud to 9 Mbaud |
| |
|
- Dual AGC for IF and RF gain control |
| |
|
- Front derotator for better low symbol rate performance and relaxed tuner constraints |
| |
|
- Automatic spectrum inversion |
| |
|
- Excellent adjacent-channel and co-channel interference suppression |
| |
|
- Excellent symbol timing offset mitigation and carrier suppression |
| |
|
- On-chip FEC |
| |
|
- Integrated BER and SNR indication for signal quality monitoring |
| |
|
- Lock and interrupt indication |
| |
• |
High-end 10-bit ADC for direct high IF, low IF and zero IF (for CTTB) applications |
| |
• |
On-chip 64Mbit SDRAM |
| |
• |
MPEG TS output formats: Parallel, serial and DVB-CI supported |
| |
• |
Configurable TS output pin mapping for flexible PCB layout |
| |
• |
Clock generation from single external crystal or clock |
| |
• |
2-wire bus control with up to 4 addresses selectable |
| |
• |
Dedicated 2-wire bus repeater to control tuner |
| |
• |
Low power consumption with sleep mode available |
| |
• |
Green package: 64-pin LQFP |
