R5F72115D160FPV datasheet(988/1228 Pages) RENESAS

Part #	R5F72115D160FPV

Description	32-Bit RISC Microcomputer SuperHTM RISC engine Family

PDF	1228 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 21 Flash Memory

Rev. 2.00 May. 08, 2008 Page 964 of 1200

REJ09B0344-0200

When the new bit rate is selectable, the boot program returns an ACK code to the host and then

makes the register setting to select the new bit rate. The host then sends an ACK code at the

new bit rate, and the boot program responds to this with another ACK code, this time at the

new bit rate.

Acknowledge

H'06

• Acknowledge H'06 (1 byte): The ACK code sent by the host to acknowledge the new bit rate.

Response

H'06

• Response H'06 (1 byte): The ACK code transferred in response to acknowledgement of the

new bit rate

The sequence of new bit rate selection is shown in figure 21.22.

Host

Boot program

New bit rate setting

H'06 (ACK)

H'06 (ACK) at the new bit rate

New bit rate setting

Wait for one-bit

period at the current

bit rate setting

Setting the new

bit rate

Figure 21.22 Sequence of New Bit Rate Selection

R5F72115D160FPV Datasheet(PDF) 988 Page - Renesas Technology Corp