熟女熟妇人妻在线视频,在线观看无码精品动漫,免费国产污网站在线观看15

您好，
買賣IC網(wǎng)歡迎您。
請登錄
免費注冊

您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄25633 > MT80C31-25R (TEMIC SEMICONDUCTORS) 8-BIT, 25 MHz, MICROCONTROLLER, PQFP44 PDF資料下載

型號：	MT80C31-25R
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, 25 MHz, MICROCONTROLLER, PQFP44
文件頁數(shù)：	1405/1447頁
文件大?。?/td>	3788K
代理商：	MT80C31-25R

6437E–ATARM–23-Apr-13

Memory Interface

Preview datapath contains a data formatter that converts 8:8:8 pixel to RGB 5:6:5 format compli-

ant with 16-bit format of the LCD controller. In general, when converting from a color channel

with more bits to one with fewer bits, formatter module discards the lower-order bits. Example:

Converting from RGB 8:8:8 to RGB 5:6:5, it discards the three LSBs from the red and blue chan-

nels, and two LSBs from the green channel. When grayscale mode is enabled, two memory

formats are supported. One mode supports 2 pixels per word, and the other mode supports 1

pixel per word.

FIFO and DMA Features

Both preview and Codec datapaths contain FIFOs. These asynchronous buffers are used to

safely transfer formatted pixels from Pixel clock domain to AHB clock domain. A video arbiter is

used to manage FIFO thresholds and triggers a relevant DMA request through the AHB master

interface. Thus, depending on FIFO state, a specified length burst is asserted. Regarding AHB

master interface, it supports Scatter DMA mode through linked list operation. This mode of oper-

ation improves flexibility of image buffer location and allows the user to allocate two or more

frame buffers. The destination frame buffers are defined by a series of Frame Buffer Descriptors

(FBD). Each FBD controls the transfer of one entire frame and then optionally loads a further

FBD to switch the DMA operation at another frame buffer address. The FBD is defined by a

series of three words. The first one defines the current frame buffer address (named

DMA_X_ADDR register), the second defines control information (named DMA_X_CTRL regis-

ter) and the third defines the next descriptor address (named DMA_X_DSCR). DMA transfer

mode with linked list support is available for both codec and preview datapath. The data to be

transferred described by an FBD requires several burst accesses. In the example below, the use

of 2 ping-pong frame buffers is described.

The first FBD, stored at address 0x00030000, defines the location of the first frame buffer. This

address is programmed in the ISI user interface DMA_P_DSCR. To enable Descriptor fetch

operation DMA_P_CTRL register must be set to 0x00000001. LLI_0 and LLI_1 are the two

descriptors of the Linked list.

Destination Address: frame buffer ID0 0x02A000 (LLI_0.DMA_P_ADDR)

Transfer 0 Control Information, fetch and writeback: 0x00000003 (LLI_0.DMA_P_CTRL)

Next FBD address: 0x00030010 (LLI_0.DMA_P_DSCR)

Second FBD, stored at address 0x00030010, defines the location of the second frame buffer.

Destination Address: frame buffer ID1 0x0003A000 (LLI_1.DMA_P_ADDR

Transfer 1 Control information fetch and writeback: 0x00000003 (LLI_1.DMA_P_CTRL)

Next FBD address: 0x00030000, wrapping to first FBD (LLI_1.DMA_P_DSCR)

Using this technique, several frame buffers can be configured through the linked list. Figure 41-6

illustrates a typical three frame buffer application. Frame n is mapped to frame buffer 0, frame

Table 41-8.

Grayscale Memory Mapping Configuration for 12-bit Data

P_0[3:0], 0000

P_1[3:0], 0000

P_0[3:0], 0000

相關PDF資料	PDF描述
MQ80C52TXXX-16/883	8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44
MR80C52EXXX-20SCD	8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44
MR80C32-16SHXXX	8-BIT, 16 MHz, MICROCONTROLLER, CQCC44
MD80C32EXXX-30/883	8-BIT, 30 MHz, MICROCONTROLLER, CDIP40
MR80C32E-16SC	8-BIT, 16 MHz, MICROCONTROLLER, CQCC44

相關代理商/技術(shù)參數(shù)	參數(shù)描述
MT80C31BH	制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intel 功能描述:
MT80C51BH	制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space
MT80C51FB	制造商:Rochester Electronics LLC 功能描述:- Bulk
MT80C51FB/B	制造商:Intel 功能描述:
MT80GB	制造商:Datak Corporation 功能描述:

發(fā)布緊急采購，3分鐘左右您將得到回復。

(若只采購一條型號，填寫一行即可)

*型號	*數(shù)量	廠商	批號	封裝

采購需求

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

我的聯(lián)系方式

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價