
R01UH0336EJ0102 Rev.1.02
Page 61 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 2 Port Functions
2.3.5
Port Register Protection
(1)
PPCMDn – Port Register Protection Command Register
This register is a command register for (n = 2).
Access
Writable in 8-bit units. When read, it is always read as 0.
Address
Refer to Table 2-7, Port Group Configuration Registers.
Initial value
00
H
A reset from any source will initialize the bits.
(2)
PPROTSn – Port Protection Status Registers
This register shows the state of the write sequence for a protected port register
(n = 2).
Access
Readable in 8-bit units. Values written are ignored.
Address
Refer to Table 2-7, Port Group Configuration Registers.
Initial value
00
H
A reset from any source will initialize the bits.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
W
W
W
W
W
W
W
W
Table 2-24
PPCMDm Register Contents
Bit Position
Bit Name
Function
7 to 0
—
Command capable of writing to protected port registers
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
PPROTSn_0
R
R
R
R
R
R
R
R
Table 2-25
PPROTSn Register Contents
Bit Position
Bit Name
Function
0
PPROTSn_0
Confirms errors in the write sequence for a protected port
register.
0: No protection error occurred
1: Protection error occurred
Содержание V850 Series
Страница 1556: ...V850E2 PG4 L R01UH0336EJ0102 Back Cover ...