RK2706
RK2706 is integrated system-on-chip manufactured by Rockchip.
Overview
1.1 Overview
The RK27xx is an integrated system-on-chip with Dual Core architecture, which will focus on multimedia product application such as MP3, MP4, PMP etc. The Dual-Core architecture integrated ARM7EJC and DSP micro processor and by co-operating of those two CPUs, RK27xx can get high performance on Low-Power platform . The chapter 1 and chapter 2 will introduce the features
, block diagram, and signal descriptions of RK27xx and the chapter 3 through chapter 24 will describe the full function of each module in detail. The ARM7EJC detail specification and instruction set refer to ARM’s Technical Manual.
1.2 Features z System Operation
- Dual Core Architecture (ARM7EJC+DSP)
- Support system boot sequentially from ARM7EJC to DSP
- Selectable JTAG debug method ARM7EJC debug only DSP debug only ARM7EJC+DSP dual core debug
- Selectable booting method Boot from NOR Flash Boot from Embedded ROM
- Internal memory space DSP IMEM 32Kwords DSP DMEM 32Kwords ARM7EJC Embedded Sync SRAM 4Kbytes ARM7EJC Embedded Boot ROM 8Kbytes z Clock & Power Management
- Use one 24MHz crystal oscillator
- Use three PLL ( For ARM/DSP/CODEC+HSADC)
- Support different AHB Bus and ARM7EJC clock ratio
1:1 and 1:2 mode
- Max frequency of every domain
ARM7EJC 200MHz (default 12MHz)
AHB BUS 133MHz (default 12MHz)
APB BUS 133MHz (default 12MHz)
DSP
150MHz (default 24MHz)
- Power management mode
Normal, slow, idle, stop, and power-off mode z Processor
- ARM7EJC Max frequency 200MHz ARMv5TE architecture with Jazella technology 8x Java performance improvement Five-stage pipeline DSP extensions with 32x16 MAC Small, cost-effective, processor macro cell Unified Cache architecture , Size is 16KB(8words/line) Two way configurable write-through cache
- DSP Max frequency 150MHz
Rockchip Electronic
10/263
2007/10/26
RK27XX Databook
Rock-Chips Confidential
RISC-based four-way superscalar architecture Eight-stage pipeline ...
