Artesyn MVME2500 ECC Installation and Use (August 2014) - Manual (Page 97)

Memory Maps and Registers
MVME2500-ECC Installation and Use (6806800N30F) 97
5.4.11 PLD Write Protect and I2C Debug Register
The MVME2500-ECC 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.
Table 5-13 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 FLASH_
WP_N I2C_DEB
UG_EN SERIAL_
FLASH_
WP RSVD I2C_1_
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
FLASH_WP_N SPI devices manual switch write-protect status
1 - Write-protect disabled
0 - Write-protect enabled