RM0319 datasheet(187/368 Pages) STMICROELECTRONICS

Part #	RM0319

Description	SPEAr320S architecture and functionality

PDF	368 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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187 / 368 page

RM0319

MMC-SD card/SDIO controller

Doc ID 022640 Rev 3

187/368

14.5.5

Transferring data without DMA

Figure 62.

Data transaction sequence without DMA

Command Complete Int occur

Start

End

Clr Command Complete Status

Get Response Data

Wait for

Command Complete Int

Write or read ?

Wait for

Buffer Read Ready Int

Clr Buffer Read Ready Status

(1)

Set Command Reg

Set Block Size Reg

Set Block Count Reg

Set Argument Reg

Set Transfer Mode Reg

Get Block Data

Wait for

Buffer Write Ready Int

Clr Buffer Write Ready Status

Set Block Data

Wait for

Transfer Complete Int

Clr Transfer Complete Status

Abort Transaction

Infinite Block Transfer

Single or Multi

Block Transfer

Transfer Complete Int occur

Single/Multi/

Infinite Block

Transfer?

More Blocks?

Buffer Read Ready occur

Buffer Write Ready

occur

Write

Read

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(19)

(20)

(21)

Yes

RM0319 Datasheet(PDF) 187 Page - STMicroelectronics

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