DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 182

• Manufacturer Part Number: DS31256
• Description: IC CTRLR HDLC 256-CHANNEL 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS31256

• Controller Type: HDLC Controller
• Interface: Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 500mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

17.3 Single T3 with 512 HDLC Channel Support
Figure 17-6
demultiplexed by the M13 block and passed to the DS21FF42 and DS21FT42 devices. The T1 framers
locate the frame and multiframe boundaries and interface to the DS31256. Aggregating four T1 lines into
a single 8.192MHz data stream is not required since the DS31256 has enough physical ports to support
the application, but aggregation could be done to cut down on the number of electrical connections
between the DS31256 and the T1 framers. The T1 lines can be either clear channel or channelized.
Figure 17-6. T3 Application (512 HDLC Channels)
shows an application where a T3 line is interfaced to two DS31256s. The T3 line is
DS31256
DS31256
#1
#2
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
182 of 183
DS21FT42
4 x 3
12-Channel
T1 Framer
16-Channel
DS21FF42
4 x 4
T1 Framer
1
2
16
17
18
28
Interface
DS3112
M13