cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 28

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

1.6.5
Figure 1-6
Feature List:
•
•
•
•
•
•
•
•
•
•
•
Figure 1-6.
28500-DSH-002-C
Higher data aggregation
Higher number of interfaces
Chip cost reduced by increasing the number of interfaces serving a large number of logical channels
Efficient bus occupancy when data is transferred between Link Layer Controller and memory
Fully independent serial port configuration
Different types of interfaces handled simultaneously (channelized DS3 and channelized T1/E1)
32 independent serial ports
Conventional mode supported by seven signals (RDAT, RCLK, RSYNC, ROOF, TDAT, TCLK, and TSYNC)
Local bus architecture
Per-channel DMA buffer management, linked list data structure handled in local memory
Increased PCI utilization accomplished by supporting different classes of traffic with fully per-channel
programmable threshold values of internal buffers. These configurable buffer thresholds allow the user to take
advantage of PCI bursts in transferring data between CX28500’s internal memory and shared memory.
CPU
illustrates the Line Card SONET/ATM SAR.
Memory
(RAM)
Line Card SONET/ATM SAR
CX28233
Line Card SONET/ATM SAR
PHY With
CX28223
SONET
Framer
SAR
ATM
ATM
Bridge
PCI
Mindspeed Proprietary and Confidential
Mindspeed Technologies
(per Channel) DMA
HDLC Controller
with Full Duplex
Expansion Bus
1024 Channel
CX28500
Interface
T1/E1
T1/E1
DS3
DS3
DS3
DS3
®
CX28344
1
28
DS3/T3
Framer
Quad
(Mux/Demux)
Framers
M13
+
T3
T3
T3
T3
T3/E3/STS1
T3/E3/STS1
CX28333
CX28332
Triple
Dual
LIU
LIU
Introduction
500052_006
13