DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 183

• 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

17.4 Single T3 with 672 HDLC Channel Support
Figure 17-7
T3 line is 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 applicationm, 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 17-7. T3 Application (672 HDLC Channels)
Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim/Dallas Semiconductor product.
No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time.
M a x i m I n t e g r a t e d P r o d u c t s , 1 2 0 S a n G a b r i e l D r i v e , S u n n y v a l e , C A 9 4 0 8 6 4 0 8 - 7 3 7 - 7 6 0 0
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shows an application where a fully channelized T3 line is interfaced to three DS31256s. The
(Supports 10
(Supports 10
(Supports 8
DS31256
DS31256
DS31256
T1 Lines)
T1 Lines)
T1 Lines)
#3
#2
#1
© 2006 Maxim Integrated Products • Printed USA
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 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
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
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DS31256 256-Channel, High-Throughput HDLC Controller
DS21FT42
Four x Three
12-Channel
T1 Framer
DS21FF42
Four x Four
16-Channel
T1 Framer
1
2
16
17
18
28
DS3112
M13
Interface