Sanyo DP46142, Service Manual

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18
• 64MByte typical for most designs
•
Power
• 1.1V core voltage, 1.8V memory I/F, 3.3V I/O
•
Two Package Options
• 365-ball BGA, 23x23mm
2
• 256-pin LQFP with e-pad, 28x28mm
2
(*) Slight variation of support with QFP package
1.1. SupraHD
®
748 IC Description
The SupraHD
®
748 is a member of the SupraHD
®
family of DTV system-on-chip (SoC)
developed by Zoran. This device is intended to be used in ATSC high-definition digital television
implementations. This device includes all of the functionality required to support the television
implementations shown in the following block diagrams.
Figure 2 shows a typical ATSC system implementation using the SupraHD
®
748.
Figure 3 shows the detailed block diagram of the SupraHD
®
748.
Figure 4 shows the video and audio input/output options of the SupraHD
®
748.
1.2. SupraHD
®
748 Features
The following sub-sections list the features of the SupraHD
®
748 per category. Note that features
unique to the BGA package are indicated with a “(BGA package)” designation while QFP
package features are indicated with “(QFP package)”.
1.2.1. Embedded Processing Unit
•
High performance CPU
• Integrated high-performance MIPS
®
4KEc™ CPU operating at 300MHz
• 32-bit MIPS32 enhanced architecture
• 8 K instruction cache, 8 K data cache, (2-way set associative)
• Programmable memory management unit
• Multiply/Divide unit
•
Power-down mode (triggered by WAIT instruction)
•
EJTAG debug support
•
Fully production-tested software suite
• ATSC/NTSC DTV application with customizable OSD
• V-Chip for analog and digital channels
• PSIP parsing for channel map and EPG
• Analog and digital closed-captioning (EIA-608 and EIA-708)