p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 429

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Bit
5
Bit Name
ICDRF
Initial
Value
0
R/W
R
Description
Receive Data Read Request Flag
Indicates the ICDR (ICDRR) status in receive mode.
0: Indicates that the data has been already read from ICDR
1: Indicates that data has been received successfully and
[Setting conditions]
•
[Clearing conditions]
•
•
•
When ICDRF is set due to the condition (2) above, ICDRF is
temporarily cleared to 0 when ICDR (ICDRR) is read;
however, since data is transferred from ICDRS to ICDRR
immediately, ICDRF is set to 1 again.
Note that ICDR cannot be read successfully in transmit
mode (TRS = 1) because data is not transferred from ICDRS
to ICDRR. Be sure to read data from ICDR in receive mode
(TRS = 0).
(ICDRR) or ICDR is initialized.
transferred from ICDRS to ICDRR, and the data is ready
to be read out.
When data is received successfully and transferred from
ICDRS to ICDRR.
1. When data is received successfully while ICDRF = 0
2. When ICDR is read successfully in receive mode
When ICDR (ICDRR) is read.
When 0 is written to the ICE bit.
When the IIC is internally initialized using the CLR3 to
CLR0 bits in DDCSWR.
(at the rise of the 9th clock pulse).
after data was received while ICDRF = 1.
Rev. 1.00 Sep. 21, 2006 Page 391 of 658
Section 16 I
2
C Bus Interface (IIC)
REJ09B0310-0100