JZ4770移动应用处理器数据手册

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"JZ4770是一款移动应用处理器的数据手册，由Ingenic Semiconductor Co., Ltd.于2011年5月27日发布。该手册提供了处理器的技术规格、功能和使用注意事项。" JZ4770是Ingenic Semiconductor公司设计的一款专门针对移动设备的高性能应用处理器。这款处理器在2011年的数据手册中详细介绍了其核心技术特点和性能参数，适用于移动设备的开发和应用。以下是对JZ4770的一些关键知识点的详细说明： 1. **处理器架构**：JZ4770可能采用了先进的微处理器架构，如RISC（精简指令集计算）或MIPS架构，以提供高效的计算能力并降低功耗，适合移动设备的长时间使用。 2. **处理性能**：由于是移动应用处理器，JZ4770可能拥有较高的时钟速度和多核处理能力，能够支持复杂的操作系统和应用程序，如Android或Linux系统。 3. **多媒体支持**：针对移动设备的多媒体需求，JZ4770可能集成有高清视频解码器和图像处理单元，支持多种视频和音频格式，以实现流畅的多媒体播放体验。 4. **内存接口**：数据手册中可能会详细描述JZ4770与内存的交互方式，包括DDR、SDRAM等类型的内存接口，确保快速的数据传输和处理。 5. **电源管理**：移动应用处理器的重要特性是低功耗。JZ4770可能包含了智能电源管理技术，能够在不影响性能的情况下，根据负载条件动态调整电压和频率，延长电池寿命。 6. **外设接口**：为了连接各种外围设备，JZ4770可能提供了多种接口，如USB、UART、I2C、SPI等，以便于设备扩展和通信。 7. **安全性**：作为移动处理器，JZ4770可能内置了安全功能，如加密引擎，以保护用户数据和隐私。 8. **开发支持**：数据手册通常会包含开发工具和软件支持的信息，例如SDK（软件开发工具包），帮助开发者进行驱动程序编写和应用程序优化。 9. **警告和责任声明**：Ingenic明确指出，此处理器并非设计用于医疗或生命维持设备，使用者需遵循其销售条款和条件，并注意可能存在的知识产权问题。 10. **文档更新**：由于技术的不断发展，Ingenic保留随时更新此文档的权利，因此开发者应定期查看最新的资料和错误更正（errata）。 JZ4770的数据手册对于硬件开发者、系统集成商以及对嵌入式系统感兴趣的人员来说是一份重要的参考资料，它提供了深入理解处理器特性和性能的关键信息。

Overview

JZ4770 Mobile Application Processor Data Sheet

¾ Support data transfer between normal memory (NAND, SRAM, etc. ) / BCH and

system memory (DDR)

– General purpose DMA

¾ 12 independent DMA channels

¾ Support data transfer between On-chip Peripherals (e.g. I2C, MSC, etc.) and

system memory (DDR)

¾ APB bus bridge

– Common features

¾ Descriptor supported

¾ Transfer data units: byte, 2-byte (half word), 4-byte (word), 16-byte, 32-byte or

64-byte

¾ Transfer number of data unit: 1 ~ 224

¾ Independent source and target port width: 8-bit, 16-bit, 32-bit

z The XBurst processor system supports little endian only

1.2.5 AHB Bus Arbiter

– Provide a fair chance for each AHB master to possess the AHB bus

– Fulfill the back-to-back feature of AHB protocol

– Automatic privilege for some masters and programmable privilege for others.

Round-robin possession for masters in the same privilege

1.2.6 System Devices

z Clock generation and power management

– On-chip oscillator circuit for an 32768Hz clock and an 12MHz clock

– On-chip phase-locked loops (PLL) with programmable multiple-ratio. Internal counter are

used to ensure PLL stabilize time

– PLL on/off is programmable by software

– ICLK, PCLK, HCLK, HHCLK, MCLK and LCLK frequency can be changed separately for

software by setting division ratio

– Supports six low-power modes and function: NORMAL mode; DOZE mode; IDLE mode;

SLEEP mode; HIBERNATE mode; and MODULE-STOP function

– Support module power-down

z RTC (Real Time Clock)

– 32-bit second counter

– 1Hz from 32768hz

– Alarm interrupt

– Independent power

– A 32-bits scratch register used to indicate whether power down happens for RTC power

z Interrupt controller

– Total 32 maskable interrupt sources from on-chip peripherals and external request

through GPIO ports

Overview

JZ4770 Mobile Application Processor Data Sheet

– Interrupt source and pending registers for software handling

– Unmasked interrupts can wake up the chip in sleep or standby mode

z Timer and counter unit with PWM output and/or input edge counter

– Provide eight separate channels, six of them have input signal transition edge counter

– 16-bit A counter and 16-bit B counter with auto-reload function every channel

– Support interrupt generation when the A counter underflows

– Three clock sources: RTCLK (real time clock), EXCLK (external clock input), PCLK (APB

Bus clock) selected with 1, 4, 16, 64, 256 and 1024 clock dividing selected

– Every channel has PWM output

z OS timer

– One channel

– 32-bit counter and 32-bit compare register

– Support interrupt generation when the counter matches the compare register

– Three clock sources: RTCLK (real time clock), EXCLK (external clock input), PCLK (APB

Bus clock) selected with 1, 4, 16, 64, 256 and 1024 clock dividing selected

z Watchdog timer

– 16-bit counter in RTC clock with 1, 4, 16, 64, 256 and 1024 clock dividing selected

– Generate power-on reset

1.2.7 Audio/Display/UI Interfaces

z LCD controller

– Single-panel display in active mode, and single- or dual-panel displays in passive mode

– 2, 4, 16 grayscales and up to 4096 colors in STN mode

– 2, 4, 16, 256, 4K, 32K, 64K, 256K and 16M colors in TFT mode

– 24-bit data bus

– Support 1,2,4,8 pins STN panel, 16bit, 18bit and 24bit TFT and 8bit I/F TFT

– Display size up to 1920x1080 pixels

– 256×16 bits internal palette RAM

– Support ITU601/656 data format

– Support smart LCD (SRAM-like interface LCD module)

– Support delta RGB

– One single color background and two foreground OSD

– Compressed frame supported

– Support LVDS signal output

z TV encoder

– Support NTSC or PAL

– Support CVBS signal

– 10 bits DAC

z EPD controller

– Supports Electro-Phoretic Display and compatible devices

– Supports different size of display panel

– Supports different width of pixel data

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zjz.data <- Read10X(data.dir = "GSE230192_RAW") Error in Read10X(data.dir = "GSE230192_RAW") : Barcode file missing. Expecting barcodes.tsv.gz

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