SH-Navi1 (SH7770)
Overview
The SH-Navi1 is a SoC built around the SH-4A operating at 400 MHz and integrating more than 50 peripheral modules, including a 2-D graphics engine, a 3-D graphics engine, GPS baseband processing functions, and other functions required by car information terminals.
The SH-4A CPU core delivers superior processing performance of 720 MIPS at its maximum operating frequency of 400 MHz. The instruction set is upward-compatible with the SH-4, allowing developers to reuse existing system software written for the SH-4.
System Block Diagram
Specification
| Item | SH-Navi1 Specifications |
|---|---|
| Type name | R8A77700DA01BG |
| Power supply voltage | 1.25 V (internal) / 3.3 V, 2.5 V (external) |
| Maximum operating frequency | 400 MHz |
| Processing performance | 720 MIPS, 2.8 GFLOPS (at 400 MHz operation) |
| CPU core | SH-4A core |
| On-chip RAM | 16 Kbytes |
| Cache memory | 4-way set associative type, with separate 32 Kbytes for instructions and 32 Kbytes for data |
| External memory | DDR-SDRAM directly connectable via memory controller SRAM and ROM directly connectable via bus state controller |
| Extension bus | Address space : 64 Mbytes × 3 |
| Main on-chip peripheral functions | 2D/3D graphics engines, display control Video input interface GPS baseband processing module, real-time clock USB Host/Function interface Dedicated DMAC × 36 channels Various sound interfaces × 6 channels Controller area network (CAN) interface × 1 channel I2C bus interface × 1 channel Serial/parallel interface × 1 channel Remote control interface x 1 channel Serial communication interface × 10 channels Timer × 9 channels D/A converter (8-bit) × 3 channels A/D converter (10-bit) × 4 channels On-chip debugging function Interrupt controller Clock pulse generator : built-in multiplication PLL |
| Power-down modes | Sleep mode RTC power supply backup mode DDR-SDRAM power supply backup mode |
| Package | 520-pin BGA (33 mm × 33 mm) |
