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RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

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Under development<br />

Preliminary document<br />

Specifications in this document are tentative and subject to change.<br />

<strong>RL78</strong>/<strong>D1A</strong> CHAPTER 12 SERIAL ARRAY UNIT<br />

Figure 12-75. Flowchart of Address Field Transmission<br />

Starting IIC communication<br />

SMRmn, SCRmn: Setting communication<br />

SPSm, SDRmn[15:9]: Setting transfer rate<br />

Writing 0 to SOmn bit<br />

Writing 0 to CKOmn bit<br />

Writing 1 to SOEmn bit<br />

Writing 1 to SSmn bit<br />

Writing address and R/W<br />

data to SDRmn<br />

Transfer end interrupt<br />

generated?<br />

Yes<br />

Parity error (ACK error) flag<br />

PEFmn = 1 ?<br />

Address field<br />

transmission completed<br />

Remark m: Unit number (m = 1), n: Channel number (n = 1)<br />

No<br />

To data transmission flow<br />

and data reception flow<br />

Perform initial setting<br />

when SEmn = 0.<br />

R01UH0317EJ0004 Rev. 0.04 655<br />

Feb. 22, 2013<br />

No<br />

Yes<br />

ACK reception error

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