CPLD Control and Status Registers 55
3.2.14 Control Register 1 (0x620)
The
SBC622
only
implements
bit
0
‐
5,
and
bit
7
of
this
register.
NOTE
The WDT enable on the SBC622 is controlled by the Watchdog Timer CSR (location 0x60E).
3.2.15 Control Register 2 (0x621)
This
controls
the
USB
power
and
the
COM
ports.
The
SBC622
only
implements
bits
1
‐
3
of
this
register.
Note
that
on
the
SBC622,
jumper
E7
can
override
the
setting
of
these
bits.
Table 3-8 Control Register 1 (0x620)
Bit Meaning
D7
Sticky BIT (used by BIOS to know when board has been power cycled)
This bit is cleared to logic '0' by a power cycle
D6
Watchdog WDT_TOUT Reset enable
1 = Enabled
0 = Disabled (default)
D5 COM1/2
Buffer
Enable
1 = Buffer Enabled (default)
0 = Buffer Disabled
D4
ISP Data buffer enable
1 = Enabled
0 = Disabled (default)
D3 BMM_PS0_ISP_VPP
Used to program the BMM, consult the factory for use
D2 BMM_PS1_ISP_CLK
Used to program the BMM, consult the factory for use
D1 BMM_PROGRAM_EN
Used to program the BMM, consult the factory for use
D0 ISP
Data
out
Used to program the BMM, consult the factory for use
Table 3-9 Control Register 2 (0x621)
Bits Meaning
D7
USB Power enable 1 1 = Power on 0 = Power off (Default)
D6
USB Power enable 2 1 = Power on 0 = Power off (Default)
D5 and D4
COM mode, as follows:
D5 D4 COM
Mode
0 0 COM2
0 1 COM2
OFF
1 0 BMM
1 1 COM1
D3
COM2 RS422 select 1 = RS422 mode 0 = RS232 (default)
D2
COM1 RS422 select 1 = RS422 mode 0 = RS232 (default)
D1
COM buffer loopback 1 = Loopback enabled 0 = Loopback off (default)
D0
COM buffer enable 1 = COM buffer enabled 0 = COM buffer disabled (default)
Summary of Contents for OpenVPX VPXcel6 SBC622
Page 2: ...Document History Hardware Reference Document Number 500 9300527818 000 Rev B March 18 2011 ...
Page 33: ...Installation and Setup 33 Figure 1 3 PMC Installed onto 2 PMC Site Model F ...
Page 37: ...Installation and Setup 37 Figure 1 5 Front Panel SBC622 Isometric View Convection cooled F F ...