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DS31256 数据表(PDF) 108 Page - Maxim Integrated Products

部件名 DS31256
功能描述  256-Channel, High-Throughput HDLC Controller
PDF  183 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

DS31256 数据表(HTML) 108 Page - Maxim Integrated Products

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DS31256 256-Channel, High-Throughput HDLC Controller
108 of 183
Figure 9-10. Transmit DMA Operation
00h
08h
Done-Queue Descriptors
(circular queue)
04h
Free Desc. Ptr.
CH#5
Status
Free Desc. Ptr.
CH#1
Status
Free Desc. Ptr.
CH#
Status
00h
Pending-Queue Descriptors
(circular queue)
04h
Free Desc. Ptr.
CH#5
PRI
Free Desc. Ptr.
CH#1
PRI
Data Buffer Address
CH #1
EOF
Last Transmitted
Data Buffer
for Channel 1
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #1
EOF
2nd Transmitted
Data Buffer
for Channel 1
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #1
EOF
1st Transmitted
Data Buffer
for Channel 1
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #5
EOF
1st Queued
Data Buffer
for Channel 5
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #5
EOF
2nd Queued
Data Buffer
for Channel 5
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #5
EOF
Last Queued
Data Buffer
for Channel 5
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Data Buffer Address
CH #1
EOF
Queued
Data Buffer
for Channel 1
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
Open Descriptor Space
Available for Use by the Host
Data Buffer Address
CH #5
EOF
Transmitted
Data Buffer
for Channel 5
# Bytes Next Desc. Ptr.
Next Pend. Desc.
PV
CV
unused
unused
08h
0Ch
Free Desc. Ptr.
CH#
PRI
Free Desc. Ptr.
CH#
PRI
Open Descriptor Space
Available for Use by the Host
0Ch
14h
10h
Free Desc. Ptr.
CH#
Status
Free Desc. Ptr.
CH#
Status
Free Desc. Ptr.
CH#
Status
EOF = 0
EOF = 0
EOF = 1
EOF = 0
EOF = 1
EOF = 0
EOF = 0
EOF = 1



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