cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 18

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

1.2
Each of the CX28500 serial ports can be configured to operate in any of the preceding operational modes. The
following restrictions apply:
1. The overall number of time slots cannot exceed 4096.
2. The overall number of channels cannot exceed 1024.
3. Only the first 6 ports can be configured to operate as high speed ports—T3 (44.7 Mbps), E3 (34.4 Mbps), and
4. The total accumulated data rate of all serial port clocks in either receive or transmit direction must be less than
Allowed CX28500 port configurations are represented in
Table 1-2.
28500-DSH-002-C
FOOTNOTE:
(1)
For high speed ports such as T3 (44.736 Mbps), E3 (34.368 Mbps), HSSI (51.840 Mbps) the data path of the remaining ports may
operate at less than or equal to 4 Mbps or 8 Mbps (see
HSSI (52 Mbps).
250 Mbps for a PCI bus rate of 33 MHz and 390 Mbps for a PCI bus rate of 66 MHz.
Number of Ports
Speed of Port
Allowed CX28500 Port Configurations
CX28500 Serial Port Throughput Limits
4 Mbps
32
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8 Mbps
32
Table
1-3).
13 Mbps
32
Table
1-2.
®
34.4 Mbps
6
(1)
44.7 Mbps
6
(1)
Introduction
51.8 Mbps
6
(1)
3