76 SBC347A 3U VPX Single Board Computer
Publication No. 500-9300527837-000 Rev. A.0
6.56 SSD Secure Hardware Erase Capability Register (0x6B2)
Hardware Secure Erase is not currently available, but may be in the future. When
available, triggering a hardware erase function will result in a secure erase
algorithm being executed.
6.57 UART Enable Register (0x6B8)
COM3 is connected to the BMM only and has no transceiver associated with it.
6.58 COM Port Enable Register (0x6BB)
Software should enable transceivers after setting the desired COM port mode (i.e.,
RS232/RS422). Setting either of bits 0 or 1 to a ‘1’ will enable both COM1 and
COM2 transceivers. To disable transceivers, both of bits 0 and 1 must be cleared to
‘0’.
Bits
Description
Default
7 to 1
SSD7 to SSD1 availability:
SSD7 to SSD1 are not supported.
0 = Hardware Secure Erase not available
0000000
b
0
SSD0 availability:
0= Hardware Secure Erase not available
1 = Hardware Secure Erase available
1
Bits
Read/Write Description
Default
7 to 3
Read only
COM8 to COM4 UART enable:
COM8 to COM4 UARTs are not available
00000
b
2
Read/Write COM3 UART enable:
1 = COM3 UART is enabled
0 = COM3 UART is disabled and will not respond to reads or writes
1
1
Read/Write COM2 UART enable:
1 = COM2 UART is enabled
0 = COM2 UART is disabled and will not respond to reads or writes
1
0
Read/Write COM1 UART enable:
1 = COM1 UART is enabled
0 = COM1 UART is disabled and will not respond to reads or writes
1
Bits
Read/Write Description
Default
7 to 2
Read only
COM8 to COM3 enable:
COM8 to COM3 are not available
000000
b
1
Read/Write COM2 enable:
1 = COM2 transceiver enabled
0 = COM2 transceiver disabled
0
0
Read/Write COM1 enable:
1 = COM1 transceiver enabled
0 = COM1 transceiver disabled
0