SH7261 datasheet(974/1348 Pages) RENESAS

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Section 20 IEBus

TM Controller (IEB) [R5S72612] [R5S72613]

Rev. 2.00 Sep. 07, 2007 Page 942 of 1312

REJ09B0320-0200

the wait state. In this case, the IEB waits for data for the maximum number of receive bytes + one

byte. Then, if data for the maximum number of receive bytes + one byte is not received, a receive

timing error is detected and the RXERTME flag is set. In this case, the RXEDLE flag is not set.

The RXEDLE flag is set when data for the maximum number of receive bytes + one byte is

received.

The IEB also waits for data for the maximum number of receive bytes + one byte, when the

maximum number of receive bytes have been received but the parity error is not cleared. If data

for the maximum number of receive bytes + one byte is not received, the RXERTME flag is set. In

this case, the RXEPE flag is not set. The RXEPE flag is set when data for the maximum number

of receive bytes + one byte is received.

Figure 20.19 shows the operation timing when the reception has not been completed within the

maximum number of receive bytes.

IERSR

RXEDLE

IERSR

RXERTME

RXEPE

Dn-1

Dn+1

Dn + 1 is not received

Slave reception

HD: Header

MA: Master address field

SA: Slave address field

CT: Control field

DL: Message length field

Dn: Data field (n = Max. no. of transfer bytes)

Dn + 1 is received

Figure 20.19 Operation Timing when Reception has not been Completed within Maximum

Number of Receive Bytes

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