h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 602

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 I
Rev. 6.00 Feb 22, 2005 page 542 of 1484
REJ09B0103-0600
TDRE
0
1
RDRF
0
1
Description
The next transmit data is in ICDR (ICDRT), or transmission cannot
be started
[Clearing conditions]
The next transmit data can be written in ICDR (ICDRT)
[Setting conditions]
Description
The data in ICDR (ICDRR) is invalid
[Clearing condition]
The ICDR (ICDRR) receive data can be read
[Setting condition]
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
When transmit data is written in ICDR (ICDRT) in transmit mode (TRS = 1)
When a stop condition is detected in the bus line state after a stop condition is
issued with the I
When a stop condition is detected with the I
In receive mode (TRS = 0)
(A 0 write to TRS during transfer is valid after reception of a frame containing an
acknowledge bit)
In transmit mode (TRS = 1), when a start condition is detected in the bus line state
after a start condition is issued in master mode with the I
format selected
When data is transferred from ICDRT to ICDRS
(Data transfer from ICDRT to ICDRS when TRS = 1 and TDRE = 0, and ICDRS is
empty)
In receive mode (TRS = 0), when a switch is made from slave receive mode (TRS
= 0) to transmit mode (TRS = 1) after detection of a start condition (first time only)
When ICDR (ICDRR) receive data is read in receive mode
When data is transferred from ICDRS to ICDRR
(Data transfer from ICDRS to ICDRR in case of normal termination with TRS = 0
and RDRF = 0)
2
C bus format or serial format selected
2
C bus format selected
2
C bus format or serial
(Initial value)
(Initial value)