Renesas RL78/F13

RL78/F13, F14 CHAPTER 18 CAN INTERFACE (RS-CAN LITE)
R01UH0368EJ0210 Rev.2.10 1304
Dec 10, 2015
18.3.13 CAN Global Status Register (GSTS)
Address GSTSL: F032AH, GSTSH: F032BH
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
— — — — — — — — — — — — GRAM
INIT
GSLP
STS
GHLT
STS
GRST
STS
After Reset 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1
Bit Symbol Bit Name Description R/W
15 to 4 — Reserved These bits are always read as 0. R
3 GRAMINIT CAN RAM Initialization Status Flag 0: CAN RAM initialization is completed.
1: CAN RAM initialization is ongoing.
R
2 GSLPSTS Global Stop Status Flag 0: Not in global stop mode
1: In global stop mode
R
1 GHLTSTS Global Test Status Flag 0: Not in global test mode
1: In global test mode
R
0 GRSTSTS Global Reset Status Flag 0: Not in global reset mode
1: In global reset mode
R
• GRAMINIT Flag
This flag indicates the initialization status of the CAN RAM.
This flag is set to 1 after the CAN module is enabled, and is cleared to 0 when CAN RAM initialization is
completed.
• GSLPSTS Flag
This flag is set to 1 when the CAN module has transitioned to global stop mode, and is cleared to 0 when the
CAN module has returned from global stop mode.
• GHLTSTS Flag
This flag is set to 1 when the CAN module has transitioned to global test mode, and is cleared to 0 when the
CAN module has exited global test mode.
• GRSTSTS Flag
This flag is set to 1 when the CAN module has transitioned to global reset mode, and is cleared to 0 when the
CAN module has exited global reset mode. This flag remains 1 even when the CAN module has transitioned
from global reset mode to global stop mode.