cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 21

• Manufacturer Part Number: cx28560
• Description: Hdlc Controller
• Manufacturer: Mindspeed Technologies

CX28560 Data Sheet
Table 1-1. Supported CX28560 Serial Port Modes (2 of 2)
1.1.1.2
Table 1-2. Allowed CX28560 Port Configurations
28560-DSH-001-B
Note(s):
1. A conventional serial port is defined as 7 input/output signals as follows: Transmit Clock (TCLK), Transmit Synchronization
2. Channelized mode refers to a data bit stream segmented into frames. Each frame consists of a series of 8-bit time slots. The
3. An Time Slot Bus (TSBUS) (no DS0 extraction) is defined as 7 input/output signals as follows: Transmit Clock (TCLK),
4. A Time Slot Bus (TSBUS) (with DS0 extraction) is defined as 9 input/output signals: Transmit Clock (TCLK), Transmit Stuff
Number of Ports
Note(s):
(1)
Speed of Port
CX28560 Serial Port Mode
(TSYNC), Transmit Data (TDAT), Receive Clock (RCLK), Receive Synchronization (RSYNC), Receive Data (RDAT), Receive Out-
Of-Frame, or Clear To Send (ROOF/ CTS). In conventional mode, the TGSYNC and RGSYNC signals are ignored. (For a detailed
description of these signals, see
frame synchronization is maintained in both the transmit and receive direction by using the Transmit Synchronization (TSYNC)
and Receive Synchronization (RSYNC) input signals.
Transmit Stuff (TSTUFF), Transmit Data (TDAT), Transmit Strobe (TSTB), Receive Clock (RCLK), Receive Stuff (RSTUFF),
Receive Data (RDAT). (For a detailed description of these signals, see
(TSTUFF), Transmit Data (TDAT), Transmit Strobe (TSTB), Receive Clock (RCLK), Receive Stuff (RSTUFF), Receive Data
(RDAT), Receive Group Sync (RGSYNC), Transmit Group Sync (TGSYNC). For a detailed description of these signals, see
Chapter
For high speed ports such as DS3 (44.736 Mbps), E3 (34.368 Mbps), and HSSI (52 Mbps), the data path of the remaining
ports may operate according to the CX28560’s bandwidth restrictions.
4.0.
4 Mbps
CX28560 Serial Port Throughput Limits
Each of the CX28560 serial ports can be configured to operate in any of the preceding
operational modes. The following restrictions apply:
Allowed CX28560 port configurations are listed in
32
• The overall number of time slots cannot exceed 8192.
• The overall number of channels cannot exceed 2047.
• The total accumulated speed of all serial port clocks in either receive or
• The aggregated serial port data bandwidth cannot exceed 700 Mbps in each
• The maximum speed per port is less than 52 Mbps (HSSI) where the maximum
• The maximum number of ports that can run 44.7 Mbps (T3) is 15.
• The maximum number of ports that can run 32.768 Mbps (E3) 21.
Section
transmit direction must be less than 800 MHz.
direction.
number of high speed ports is 12.
4.2.)
Mindspeed Technologies™
8 Mbps
32
Advance Information
13 Mbps
32
Chapter
Description
32.8 Mbps
4.0).
21
(1)
Table
1-2.
44.7 Mbps
15
(1)
52 Mbps
12
Introduction
(1)
1
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3