Add-On Computer Peripherals (ACP) ONS-XC-10G-1570-AO User Manual
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3
13
RD+
Receiver
Non-‐inverted
DATA
out.
AC
Coupled.
CML-‐O.
14
VeeR
Receiver
Ground
(Common
with
Transmitter
Ground).
1
15
VccR
Receiver
Power
Supply.
16
VccT
Transmitter
Power
Supply.
17
VeeT
Transmitter
Ground
(Common
with
Receiver
Ground).
1
18
TD+
Transmitter
Non-‐Inverted
DATA
in.
AC
Coupled.
CML-‐I.
19
TD-‐
Transmitter
Inverted
DATA
in.
AC
Coupled.
CML-‐O.
20
VeeT
Transmitter
Ground
(Common
with
Receiver
Ground).
1
Notes:
1. The
module
signal
ground
contacts,
VeeR
and
VeeT,
should
be
isolated
from
the
module
case.
2. This contact is an open collector/drain output and should be pulled up to the Vcc_Host with resister in
2. This contact is an open collector/drain output and should be pulled up to the Vcc_Host with resister in
the
range
4.7KΩ
to
10KΩ.
Pull
ups
can
be
connected
to
one
or
several
power
supplies,
however
the
host
board design shall ensure that no module contract has voltage exceeding module VccT/R +0.5.V.
board design shall ensure that no module contract has voltage exceeding module VccT/R +0.5.V.
3. Tx_Disable
is
an
input
contact
with
a
4.7KΩ
to
10KΩ
pull-‐up
resistor
to
VccT
inside
module.
4. Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull the contract up to
4. Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull the contract up to
Vcc_Host
with
a
resistor
in
the
range
from
4.7KΩ
to
10KΩ.
Mod_ABS
is
asserted
“High”
when
the
SFP+
module is physically absent from a host slot.
module is physically absent from a host slot.
5. RS0
and
RS1
are
module
inputs
and
are
pulled
low
to
VeeT
with
>30K
Ω
resistors
in
the
module.
RS0
optionally
selects
the
optical
receive
signaling
rate
coverage.
RS1
optionally
selects
the
optical
transmit
signaling rate coverage.
These contacts can also be used for RS0 and RS1 if implementing SFF8079. See SFF8079 for details. RS1
is commonly connected to VeeT or VeeR in the classic SFP modules. The host needs to ensure that it will
not be damaged if this contact is connected to VeeT or VeeR in the module.
The SFP+ module provides two inputs RS0 and RS1 that can optionally be used for rate selection. RS0
controls the receive path signaling rate compatibility, and RS1 controls the transmit path signaling rate
compatibility. The host and module may choose to use either, both, or none of these functions. Because
contact 9 in the classic SFP INF-‐8074i is connected to VeeR, and SFP+ host utilizing RS1 must provide
short circuit protection.
This rate select functionality can also be controlled by software as defined by SFF-‐8472. Optionally the
rate select methods of Part 2 SFF-‐8079 may be used instead of the method described here by setting the
management declaration bit (A0h byte 93 bit 2) to 1, see SFF-‐8472.
signaling rate coverage.
These contacts can also be used for RS0 and RS1 if implementing SFF8079. See SFF8079 for details. RS1
is commonly connected to VeeT or VeeR in the classic SFP modules. The host needs to ensure that it will
not be damaged if this contact is connected to VeeT or VeeR in the module.
The SFP+ module provides two inputs RS0 and RS1 that can optionally be used for rate selection. RS0
controls the receive path signaling rate compatibility, and RS1 controls the transmit path signaling rate
compatibility. The host and module may choose to use either, both, or none of these functions. Because
contact 9 in the classic SFP INF-‐8074i is connected to VeeR, and SFP+ host utilizing RS1 must provide
short circuit protection.
This rate select functionality can also be controlled by software as defined by SFF-‐8472. Optionally the
rate select methods of Part 2 SFF-‐8079 may be used instead of the method described here by setting the
management declaration bit (A0h byte 93 bit 2) to 1, see SFF-‐8472.