cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 19

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

Table 1-3.
CX28500’s configuration options are extremely flexible. Each logical channel can be assigned to a physical stream
ranging from 8 Kbps (sub-channeling mode) to 52 Mbps.
CX28500’s serial ports can interface to a standard PCM highway or TSBUS bus, which can be configured to
operate at any of the serial port rates given in
Table 1-4.
28500-DSH-002-C
GENERAL NOTE:
1. These data path combinations are meant to illustrate the flexibility in data path configuration, and are not suggesting that these are the
FOOTNOTE:
(1)
Combinations
Number of
only supported configurations. Again, they are here for illustration purposes only. Other data rates and path combinations are achievable,
as long as device-aggregate bandwidth restrictions and per-port bandwidth restrictions are met.
A high speed port can be E3 (34.4 Mbps), T3 (44.7 Mbps), or HSSI (52 Mbps) without exceeding the maximum of six serial ports.
Allowed
Ports
Path
2 x 52 + 30 x E1
Configuration
Data Path Combinations
Examples of Serial Port Configurations With 33 MHz PCI Clock
Maximum
2 Mbps
(2.048)
32 x 2E1
32 x T1
32 x E1
—
—
—
—
—
—
—
—
—
—
—
26
26
26
(4.096)
4 Mbps
17
26
—
—
—
—
—
—
—
—
—
—
—
—
Low Speed
8 Mbps
(8.192)
—
—
14
22
—
—
—
—
—
—
—
—
—
9
Mindspeed Proprietary and Confidential
Mindspeed Technologies
(10.240)
10 Mbps
—
—
—
—
—
11
17
—
—
—
—
—
—
Tables 1-4
7
Total Bandwidth
131.072 Mbps
49.408 Mbps
65.536 Mbps
165.44 Mbps
13 Mbps
(12.960)
250 Mbps
—
—
—
—
—
—
—
—
14
—
—
—
9
6
and 1-5.
34.4 Mbps
(
E3-34.368
—
—
—
—
—
—
—
—
—
®
6
6
6
6
6
(1)
)
44.7 Mbps
(T3-44.736)
High Speed
—
—
—
—
—
—
—
—
—
6
6
–
6
6
(1)
(HSSI-51.840)
51.8 Mbps
PCI Clock
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
—
—
—
—
—
—
—
—
6
6
–
6
6
6
(1)
Introduction
Port Speed
380.7 Mbps
312.7 Mbps
383.1 Mbps
386.4 Mbps
384.8 Mbps
381.1 Mbps
382.7 Mbps
380.3 Mbps
385.1 Mbps
388.8 Mbps
387.6 Mbps
321.7 Mbps
364.3 Mbps
259.5 Mbps
Aggregate
4