DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 181

• 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

17.2 Dual T3 with 256 HDLC Channel Support
Figure 17-5
demultiplexed by DS3112 M13 devices and passed to the DS21FF42 4 x 4 16-channel T1 framer and
DS21FT42 4 x 3 12-channel T1 framer devices. The T1 framers locate the frame and multiframe
boundaries and interface to the DS31256 by aggregating four T1 lines into a single 8.192MHz data
stream, which then flows into and out of the DS31256. The T1 lines can be either clear channel or
channelized.
Figure 17-5. Dual T3 Application
DS31256
shows an application where two T3 lines are interfaced to a single DS31256. The T3 lines are
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
181 of 183
DS21FT42
4 x 3
12-Channel
T1 Framer
DS21FT42
4 x 3
12-Channel
T1 Framer
DS21FF42
4 x 4
16-Channel
T1 Framer
DS21FF42
4 x 4
16-Channel
T1 Framer
1
2
16
17
18
28
1
2
16
17
18
28
Interface
DS3112
Interface
DS3112
M13
M13
DS3152
T3/E3
Dual
LIU
T3
Line
#1
T3
Line
#2