RELEASED
PM7350 S/UNI DUPLEX
DATA SHEET
PMC-1980581
ISSUE 8
DUAL SERIAL LINK PHY MULTIPLEXER
The remote reset activate and remote reset deactivate code words are used to
control the RSTOB output. If the remote reset activate code is validated, the
RSTOB output is asserted low. If the remote reset deactivate code is validated
the RSTOB output becomes high impedance. RSTOB can also be controlled
through the RESETO bit in the Master Configuration register.
The Remote Defect Indication (RDI) is sent whenever Loss of Signal (LOS) or
Loss of Cell Delineation (LCD) is declared. This code word takes precedence
over all others.
Table 17 Assigned Bit Oriented Codes
Function
Codeword (left bit
transmitted first)
Remote Defect Indication (RDI)
Loopback activate
Loopback deactivate
Remote reset activate
Remote reset deactivate
Reserved
11111111 00000000
11111111 01000000
11111111 00100000
11111111 01100000
11111111 00010000
11111111 01010000
. . .
. . .
Reserved
11111111 00000100
11111111 01000100
. . .
User Defined
. . .
User Defined
11111111 00111110
11111111 01111110
Idle Code
9.3.3 Cell Delineation Process
The S/UNI-DUPLEX performs HCS cell delineation, payload descrambling, idle
cell filtering and header error detection to recover valid cells from the receive
high-speed links. These functions are performed with a similar algorithm as for
the upstream Clocked Serial Data interface described in Section 9.2.1 but
support 9 to 13 byte cell headers.
The loss of cell delineation (LCD) alarm is declared after 1318 consecutive cell
periods (4.0 ms at 155.52Mb/s) in the HUNT or PRESYNC states. The LCD
alarm is cleared after 1318 consecutive cells in the SYNC state.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
71
PMC [ PMC-SIERRA, INC ]
