stlc5465 STMicroelectronics, stlc5465 Datasheet - Page 28

• Manufacturer Part Number: stlc5465
• Description: Multi Hdlc With Switching Matrix Associated
• Manufacturer: STMicroelectronics

STLC5465B
III - FUNCTIONAL DESCRIPTION (continued)
Figure 12 : Structure of the Receive Circular Queue
Figure 13 : Structure of the Transmit Circular Queue
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NRDA
NTDA
RBA
TBA
Initial Transmit
Descriptor
Transmit
Descriptor n
Initial Receive
Descriptor
Receive
Descriptor n
Transmit
Receive
Buffer n
Buffer n
NRDA
NTDA
One transmit circular queue by channel
One receive circular queue by channel
RBA
TBA
Transmit
Receive
Buffer 1
Buffer 1
Initialization Block
Initialization Block
up to 32 channels
up to 32 channels
31
31
0
1
0
1
RDA
RDA
RDA
TDA
TDA
TDA
Transmit
Receive
Buffer 3
Buffer 3
CONTROLLER
CONTROLLER
TRANSMIT
RECEIVE
DMA
DMA
NRDA
NTDA
Transmit
Receive
Buffer 2
Receive
Descriptor 3
RBA
Buffer 2
Transmit
Descriptor 3
TBA
Receive
Descriptor 2
Transmit
Descriptor 2
NRDA
NTDA
RBA
TBA