s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 305

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

S3C4510B
HDLC CONTROLLERS
MEMORY DATA STRUCTURE
The flow control to the HDLC controller uses two data structures to exchange control information and data.
— Transmit buffer descriptor
— Receive buffer descriptor
Each Tx DMA buffer descriptor has the following elements.
— Buffer data pointer
— Ownership bit
— Control field for transmitter
— Status field for Tx
— Transmit buffer length
— Next buffer descriptor pointer
Each Rx DMA buffer descriptor has the following elements.
— Buffer data pointer
— Ownership bit
— Status field for Rx
— Accumulated received buffer length for a frame
— Next buffer descriptor pointer
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