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R01UH0336EJ0102 Rev.1.02
Page 1061 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 20 CAN Controller (FCN)
20.5 Control Registers
20.5.1
FCN Global Registers
(1)
FCNnGMCLCTL - FCNn Global Control Register
This register is used to control the operation of the FCN module.
Access
This register can be read/written in 16-bit units.
Address
<FCNn_base> + 0 8000
H
Initial value
00x0
H
This register is initialized by various types of reset.
(a)
FCNnGMCLCTL Read
Caution 1.
While FCNnGMCLCTL.FCNnGMCLSSMO is cleared to 0, software access to
the message buffer registers (i.e. all registers with name prefix FCNnMm...), or
registers related to transmit history or receive history (FCNnCMLOSTR,
FCNnCMTGTX, FCNnCMLISTR, and FCNnCMRGRX) is disabled.
Caution 2. FCNnGMCLCTL.FCNnGMCLSSMO is read-only. Even if 1 is written while it is
0, its value does not change, and access to the message buffer registers, or
registers related to transmit history or receive history remains disabled.
15
14
13
12
11
10
9
8
FCNnGM
CLSSMO
0
0
0
0
0
0
0
7
6
5
4
3
2
1
0
0
0
FCNnGMC
LECCF
*
1
FCNnGMC
LSORF
*
1
0
0
FCNnGM
CLESDE
FCNnGM
CLPWOM
Note 1. Initial values are as follows:
- No error detection after software reset: 0000
H
- No error detection during software reset: 0010
H
- Error detection after software reset: 0020
H
- Error detection during software reset: 0030
H
FCNnGMCLSSMO
Enabling Access to Message Buffer Register and
Transmit/Receive History Registers of FCN Module
0
Write access and read access to the message buffer
register and the transmit/receive history list registers is
disabled.
1
Write access and read access to the message buffer
register and the transmit/receive history list registers is
enabled.