[OpenOMAP] 底板差不多画完了

[Riwen Huang]

我想放出来让V哥看一眼，顺便哪位大侠有时间也帮忙看看。

估计大小是10CMX10CM

目标是在这个底板的基础上可以扩展任意小模块：如WIFI、蓝牙、GPS、GPRS、1.8V的lan9221以太网，NAND...

不知还有哪个设备接不上的？

包括：

 1、DM9000以太网模块，用于调试，后面会改成lan9221

 2、MMC2/SPI3复用接口

 3、调试用的UART3、通讯用的UART2（4线、复用BSP3）、UART1（2线）

 4、USB OTG

 5、音频输入输出、S端子、摄像头、LCD

TODO：USB host未确定，好像要60MHz的PHY

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[Yanjun Luo]

呵呵，动作很快啊，好，DM9000的话你加了buffer了吧？

NAND应该用不了吧，我好像没有把NAND的线引出来。

摄像头要注意，是从核心板引出来的，而且是1.8V的，我犯了一个错误，忘了引
I2C上去，需要从底板引出来。

在 2010-05-16日的 10:23 +0800，Riwen Huang写道：

> 我想放出来让V哥看一眼，顺便哪位大侠有时间也帮忙看看。
>
>
> 估计大小是10CMX10CM
>
>
> 目标是在这个底板的基础上可以扩展任意小模块：如WIFI、蓝牙、GPS、GPRS、
> 1.8V的lan9221以太网，NAND...
> 不知还有哪个设备接不上的？
>
>
> 包括：
> 1、DM9000以太网模块，用于调试，后面会改成lan9221
> 2、MMC2/SPI3复用接口
> 3、调试用的UART3、通讯用的UART2（4线、复用BSP3）、UART1（2线）
> 4、USB OTG
> 5、音频输入输出、S端子、摄像头、LCD
>
>
>
>
> TODO：USB host未确定，好像要60MHz的PHY
>
> --
> You received this message because you are subscribed to the Google
> Groups "OpenOMAP" group.
> To post to this group, send email to open...@googlegroups.com.
> To unsubscribe from this group, send email to openomap

> +unsub...@googlegroups.com.

[Riwen Huang]

DM9000的buffer加了

GPMC已经很完整引出了啊啊，接nand没有问题吧

camera我转接到底板上去，添加i2c就可以了，呵呵。

2010/5/16 Yanjun Luo <yanju...@gmail.com>

[Yanjun Luo]

GPMC是bus接口吧，NAND 好像是单独的吧？总之我没有刻意引出NAND的信号，你仔
细研究一下，我没太在意这个。

在 2010-05-16日的 17:39 +0800，Riwen Huang写道：

[Riwen Huang]

nand 也是属于GPMC的信号啊， 没有单独的信号。

11.1.1 General-Purpose Memory Controller Overview

The general-purpose memory controller (GPMC) is dedicated to interfacing external memory devices:

· Asynchronous SRAM-like memories and application-specific integrated circuit (ASIC) devices

· Asynchronous, synchronous, and page mode (only available in non-muxed mode) burst NOR flash

devices

· NAND flash

· Pseudo-SRAM devices

11.1.1.1 GPMC Features

The GPMC is a 16-bit external memory controller. The GPMC data access engine provides a flexible

programming model for communication with all standard memories. The GPMC supports various

accesses:

· Asynchronous read/write access

· Asynchronous read page access (4, 8, 16 Word16)

· Synchronous read/write access

· Synchronous read/write burst access without wrap capability (4, 8, 16 Word16)

· Synchronous read/write burst access with wrap capability (4, 8, 16 Word16)

· Address/data-multiplexed access

· Little- and big-endian access

The GPMC can communicate with a wide range of external devices:

· External asynchronous or synchronous 8-bit wide memory or device

· External asynchronous or synchronous 16-bit wide memory or device

· External 16-bit nonmultiplexed device with limited address range (2 Kbytes)

· External 16-bit address/data-multiplexed NOR flash device

· External 8-bit and 16-bit NAND flash device

· External 16-bit pseudo SRAM (pSRAM) device

The GPMC supports up to eight chip-select regions of programmable size, and programmable base

addresses in a total address space of 1 Gbyte.

2010/5/16 Yanjun Luo <yanju...@gmail.com>

[Yanjun Luo]

那好啊，你可以试试看了。


在 2010-05-16日的 22:22 +0800，Riwen Huang写道：