Emerson MVME2500 用户手册
Memory Maps and Registers
MVME2500 Installation and Use (6806800L01H)
91
5.5.11 PLD Write Protect and I2C Debug Register
The MVME2500 PLD provides an 8-bit register which is used to indicate the status of I2C and
SPI write-protect manual switches and is used to control the SPI write-enable. I2C debug ports
are also provided in this register which can be used in controlling the bus’ status.
SPI write-protect manual switches and is used to control the SPI write-enable. I2C debug ports
are also provided in this register which can be used in controlling the bus’ status.
Table 5-14 PLD Write Protect and I2C Debug Register
REG
PLD Write Protect I2C Debug- 0xFFDF0054
Bit
7
6
5
4
3
2
1
0
Field
RSVD
MASTER
_WP_DI
SABLED
_WP_DI
SABLED
FLASH_
WP_N
WP_N
I2C_DEB
UG_EN
UG_EN
SERIAL_
FLASH_
WP
FLASH_
WP
RSVD
I2C_1_
D
D
I2C_1_C
OPER
R
R
R
R/W
R/W
R
R/W
R/W
RESET
0
1
0
0
1
0
1
1
Field Description
MASTER_WP_DISABLED
I2C devices manual switch write-protect status
1 - Write-protect enabled
0 - Write-protect disabled
1 - Write-protect enabled
0 - Write-protect disabled
FLASH_WP_N
SPI devices manual switch write-protect status
1 - Write-protect disabled
0 - Write-protect enabled
1 - Write-protect disabled
0 - Write-protect enabled