DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 108

• 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

Figure 9-10. Transmit DMA Operation
00h
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Pending-Queue Descriptors
PRI
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Done-Queue Descriptors
(circular queue)
(circular queue)
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CH#1
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CH#1
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CH#
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EOF = 1
EOF
EOF = 0
EOF
EOF = 0
EOF
EOF = 1
EOF
EOF = 0
EOF
EOF = 0
EOF
EOF = 1
EOF
EOF
unused
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Open Descriptor Space
Available for Use by the Host
Open Descriptor Space
Available for Use by the Host
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EOF = 0
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Data Buffer Address
Data Buffer Address
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Data Buffer Address
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CH #5
CH #1
CH #1
CH #1
CH #5
CH #5
CH #5
CH #1
Last Transmitted
Data Buffer
for Channel 1
Transmitted
Data Buffer
for Channel 5
1st Transmitted
Data Buffer
for Channel 1
2nd Transmitted
Data Buffer
for Channel 1
1st Queued
Data Buffer
for Channel 5
2nd Queued
Data Buffer
for Channel 5
Last Queued
Data Buffer
for Channel 5
Queued
Data Buffer
for Channel 1