r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 541

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 21.34
Note:
1. For 1 byte of data reception, skip steps (2) to (6) after step (1) and jump to process step (7).
Process step (8) is a dummy read from the SIRDR register.
SISR register
SIER register
SIER register
Read RDRF bit in SISR register
Read RDRF bit in SISR register
Read TEND bit in SISR register
Preliminary document
Specifications in this document are tentative and subject to change.
Register Setting Example in Slave Receive Mode (I
Dummy read SIRDR register
No
No
Read SIRDR register
Read SIRDR register
Slave receive mode
Last receive - 1?
Yes
RDRF = 1?
RDRF = 1?
End
AAS bit  0
CEIE_ACKBT bit  0
CEIE_ACKBT bit  1
No
Yes
Yes
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(1) Set the AAS bit to 0.
(2) Set the CEIE_ACKBT bit to the transmit device.
(3) Dummy read the SIRDR register.
(4) Wait until 1 byte is received.
(5) Determine (last receive - 1).
(6) Read the receive data.
(7) Set the CEIE_ACKBT bit of the last byte.
(8) Read the receive data of (last byte - 1).
(9) Wait until the last byte is received.
(10) Read the receive data of the last byte.
2
21. Clock Synchronous Serial Interface
C bus Interface Mode)
(1)
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(1)