Kontron COMe-cP2020 - Manual (Page 54)

www.kontron.com
COMe-P2020 User Guide
54
Table 3-30: 0x284: Device Protection Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ 0 0 0 NFWP SPDWP 0 EEWP BFWP
WRITE NU NU NU NFWP SPDWP NU EEWP BFWP
POWER UP 0 0 0 0 1 0 1 0
BITFIELD DESCRIPTION
[D0] BFWP SPI Boot Flash#1/2 write protection:
'0' = Boot Flash not write protected (forces PLD output to logic HIGH)
'1' = Boot Flash write protected PLD drives (forces PLD output to HIGH-Z)
[D1] EEWP System data EEPROM write protection:
'0' = EEPROM not write protected (forces PLD output to logic LOW)
'1' = EEPROM write protected (forces PLD output to HIGH-Z)
[D3] SPDWP SPD write protection:
'0' = SPD not write protected (forces PLD output to HIGH-Z)
'1' = SPD write protected (forces PLD output to logic HIGH)
[D4] NFWP NOR Flash write protection:
'0' = NOR Flash not write protected (forces PLD output to logic HIGH)
'1' = NOR Flash write protected (forces PLD output to HIGH-Z)
Table 3-31: 0x285: Reset Status Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ PORS 0 0 0 0 0 0 WTRS
WRITE w1c NU NU NU NU NU NU w1c
POWER UP 1 0 0 0 0 0 0 0
BITFIELD DESCRIPTION
[D0] WTRS Watchdog timer reset status, writing '1' clears the register:
'0' = System reset not generated by Watchdog timer
'1' = System reset generated by Watchdog timer
[D7] PORS Power-On reset status, writing '1' clears the register:
'0' = System reset generated by sof tware (warm reset)
'1' = System reset generated by Power-On (cold reset)
Table 3-32: 0x286: Board Interrupt Configuration Register (not implemented!)
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ 0 0 0 0 0 0 WICF
WRITE NU NU NU NU NU NU WICF
POWER UP 0 0 0 0 0 0 00
BITFIELD DESCRIPTION
[D0-D1] WICF Watchdog interrupt conf iguration:
"00" = Watchdog is disabled
"01" = CPU IRQ[9]
"10" = CPU IRQ[10]
"11" = Reserved