h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 464

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 14 Controller Area Network (HCAN)
14.3.2
GSR is an 8-bit register that indicates the status of the CAN bus.
Rev. 2.00 Dec. 05, 2005 Page 426 of 724
REJ09B0200-0200
Bit
7 to 4 
3
2
Bit Name
GSR3
GSR2
General Status Register (GSR)
Initial
Value
All 0
1
1
R/W
R
R
R
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Reset Status Bit
Indicates whether the HCAN module is in the normal
operation state or the reset state. This bit cannot be
modified.
[Setting condition]
•
•
[Clearing condition]
•
Message Transmission Status Flag
Flag that indicates whether the module is currently in
the message transmission period. This bit cannot be
modified.
[Setting condition]
•
[Clearing condition]
•
When entering configuration mode after the HCAN
internal reset has finished
Sleep mode
When entering the normal operation state after the
MCR0 bit in MCR is cleared to 0 (Note that there is
a delay between clearing of the MCR0 bit and the
GSR3 bit.)
Third bit of intermission after EOF (End of Frame)
Start of message transmission (SOF)