PM5364 pmc-sierra, PM5364 Datasheet - Page 91

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

10.3.1
10.3.2
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Transmit Inband Link Controllers (TILC)
The TILC block is used only on the system side of TUPP 2488 for the eight working and eight
protect System Egress and System Ingress Serial RASIO™ CML links. The TILC block is used
in the System Ingress path.
The TILC block transmits software messages across the system side RASIO™ CML links. The
inband communication channels across system side RASIO™ CML links allow for centralized
control and configuration when operating with a centralized fabric which is on a different board
(e.g. external NSE), or when the internal crossbar is being used in TUPP 2488 with external
SBS devices on a different board. The inband channel is full duplex. When an external NSE is
used, the external NSE has active control of the link. When the internal crossbar is used, the
TUPP 2488 has active control of the link.
Outgoing messages are held in a FIFO in the TILC capable of holding eight messages each.
Messages are written to the FIFO via the microprocessor interface. Message header bits are
written through microprocessor-accessible registers. The status of message transmission is
reported via registers indicating the number of messages queued for transmission.
Further details on the Inband Link messaging is given in Section 10.2.6.
TelecomBus Encoder (
A TCB Encoder block is required whenever the internal byte-wide 77.76 MHz TelecomBus is
connected to a TSEC block. The TCB Encoder block encodes the byte-wide TelecomBus
signals into the form of a control signal (K) and an 8-bit data bus which contains special control
characters which are marked by K. Table 6 shows how the serial TelecomBus character
encoding is done.
TCB
Encoder)
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
Released
91