NSE-8G™ Standard Product Data Sheet
Preliminary
9.9.1
In-Band Signaling Channel Fixed Overhead
The In-Band Link Controller block generates and terminates two bytes of fixed header and a
CRC-16 per every 32 byte in-band message (total 36 bytes). The two byte header provides control
and status between devices at the ends of the LVDS link. The CRC-16 is calculated over the 32
byte (and header - 34 bytes) in-band message and provides the terminating end the ability to
detect errors in the in-band message. The format of the in-band message and header bytes is
shown in Figure 11 and Figure 12.
Figure 11 In-Band Signaling Channel Message Format
1 byte
Header1
1 byte
Header2
32 bytes
Free Format Information
2 bytes
CRC-16
Figure 12 In-Band Signaling Channel Header Format
Header1
Bit 7
Bit 6
Bit 5
Bit4
Bit3
Bit2
USER[2:0]
Bit1
Bit1
Bit 0
VALID
LINK[1:0]
PAGE[1:0]
Header2
Bit 7
Bit 6
Bit 5
Bit4
Bit3
Bit2
Bit 0
AUX[7:0]
Table 5 In-band Message Header Fields
Field Name
Valid
NSE-8G to SBS
SBS to NSE
Message slot contains a message(1)
or is empty(0). If empty this message
will not be put into Rx Message FIFO
(other header information processed
as usual)
Message slot contains a message(1)
or is empty(0). If empty this message
will not be put into Rx Message FIFO
(other header information processed
as usual)
Link[1:0]#
These bits are optional for SBI336S
devices, intended for devices which
have multiple redundant links. Each
bit either indicates which Link to use,
Working(0) or Protect(1) when
These bits are optional for SBI336S
devices, intended for devices which
have multiple redundant links. Each
bit either indicates which Link to use,
Working(0) or Protect(1) when
sourced from the master device, or
which link is being used, when
sourced from the master device, or
which link is being used, when
sourced from the slave device. Other
algorithms are possible to indicate
Working or Protect over these 2 bits
but all SBI336S devices must be able
to revert back to this meaning.
sourced from the slave device. Other
algorithms are possible to indicate
Working or Protect over these 2 bits
but all SBI336S devices must be able
to revert back to this
meaning.Transmitted immediately.
Transmitted immediately.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010850, Issue 1
52
PMC [ PMC-SIERRA, INC ]
