2
Hardware Description
35
CC FPGA RTM-link
The
RTM
‐
Link
relays
the
state
of
various
control
and
status
signals
from
a
compatible
programmable
device
on
an
RTM.
The
following
signals
are
sent
to
the
RTM
for
Ethernet
LED
control:
•
Front
Ethernet
port
0
status
green
•
Front
Ethernet
port
0
status
yellow
•
Front
Ethernet
port
1
status
green
•
Front
Ethernet
port
1
status
yellow
The
following
signals
are
read
in
from
the
RTM:
•
RTM
USB
over
‐
current
(sent
to
the
PCH)
•
SFP0
RXLOS
(Sent
to
I350
port
2)
•
SFP0
TX_FAULT
(Sent
to
I350
port
2)
•
SFP0
MOD_DEF0
(Sent
to
I350
port
2)
•
SFP1
RXLOS
(Sent
to
I350
port
3)
•
SFP1
TX_FAULT
(Sent
to
I350
port
3)
•
SFP1
MOD_DEF0
(Sent
to
I350
port
3)
Customer header configuration
All
control
signals
configured
on
the
customer
and
debug
headers
are
routed
to
the
CC
FPGA.
When
any
signal
is
in
a
non
‐
default
(i.e.
LOW)
state,
a
general
flag
bit
and
a
state
bit
are
set
to
indicate
this
condition.
The
IPMC
then
reads
the
state
of
these
register
bits
as
part
of
a
normal
sensor
scan.
The
signals
associated
with
the
Customer
header
(P2)
are:
•
CLEAR_NVRAM*
•
SPI_WP*
•
BIOS_RCVR_BOOT*
•
EUSB_WP*
•
UNR_DIS*
•
ME
Firmware
Recovery
•
FORCE
BACKUP
BIOS
BOOT
