ZL50114GAG2 ZARLINK [Zarlink Semiconductor Inc], ZL50114GAG2 Datasheet - Page 50

• Manufacturer Part Number: ZL50114GAG2
• Description: 128, 256 and 1024 Channel CESoP Processors
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Each of the 11 data flows uses the Task Manager to route packet information to the next block or interface for
onward transmission. This section describes the flows between the TDM interface, the packet interface and the
Task Manager which are the main flow routes used in the ZL50110/11/14 family. For example, the TDM->TM flow is
used in flow types 1, 3, 5, and 6, and the TM->PKT flow is used in flow types 1, 3, and 9.
5.3
The ZL50110/11/14 family offers the following types of TDM service across the packet network:
Unstructured services are fully asynchronous, and include full support for clock recovery on a per stream basis.
Both adaptive and differential clock recovery mechanisms can be used. Structured services are synchronous, with
all streams driven by a common clock and frame reference. These services can be offered in two ways:
•
•
In either mode, N x 64 Kbps trunking is supported as detailed in “Structured Payload Order” on page 55.
In addition, it can be used with a variety of different protocols. It includes full support for the CESoPSN (Circuit
Emulation Services over Packet Switched Networks) and SAToP (Structure-Agnostic Transport over Packet)
protocols currently in development by the IETF's PWE3 (Pseudo-Wire Emulation Edge to Edge) working group.
5.3.1
The TDM Access Interface consists of up to 32 streams (depending on variant), each with an input and an output
data stream operating at either 1.544 Mbps or 2.048 Mbps. It contains two basic types of interface: unstructured
clock and data, for interfacing directly to a line interface unit; or structured, framed data, for interfacing to a framer
or TDM backplane.
Unstructured
asynchronous
Structured synchronous
(N x 64 Kbps)
which may be locked to an incoming clock or frame reference
used by all streams
Synchronous master mode - the ZL50110/11/14 provides a common clock and frame pulse to all streams,
Synchronous slave mode - the ZL50110/11/14 accepts a common external clock and frame pulse to be
TDM Interface
Service type
TDM Interface Block
1. This flow is for loopback test purposes only
Table 22 - TDM Services Offered by the ZL50110/11/14 Family
Flow Number
T1, E1, J2, E3, T3 and STS-1
T1, E1 and J2
Framed TDM data streams at
2.048 and 8.192 Mbps
10
11
1
1
TDM interface
Table 21 - Standard Device Flows
Zarlink Semiconductor Inc.
ZL50110/11/14
50
Bit clock in and out
Data in and out
Bit clock out
Frame pulse out
Data in and out
Bit clock in
Frame in
Data in and out
Flow Through Device
TDM to (TM) to TDM
PKT to (TM) to PKT
Interface type
Line interface unit
Framers
TDM backplane (master)
Framers
TDM backplane (slave)
Interfaces to
Data Sheet