s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 323
s3c4510b
Manufacturer Part Number
s3c4510b
Description
16/32-bit Risc Microcontroller
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.S3C4510B.pdf
(422 pages)
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S3C4510B
Number
[11]
[12]
[13]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[14]
Bit
Rx flag detected (RxFD) This bit is set to '1' when the last bit of the flag sequence is received. This
Rx data carrier detected
(RxDCD)
Rx stored data carrier
detected (RxSDCD)
Rx frame valid (RxFV)
Rx idle (RxIDLE)
Rx abort (RxABT)
Rx CRC error
(RxCRCE)
Rx non-octet align
(RxNO)
Rx overrun (RxOV)
DMA Rx memory
overflow (RxMOV)
Reserved.
DMA Tx abort
(DTxABT)
Bit Name
Table 8-11. HSTAT Register Description (Continued)
bit generates an interrupt if enabled. You can clear this bit by writing a
'1' to this bit.
The DCD status bit mirrors the state of the nDCD input pin. If nDCD input
pin is low, this status bit is '1'. If nDCD input pin is High, it is '0'. This bit
does not generate an interrupt.
This bit is set to '1' when a transition in nDCD input occurs, and can
generate interrupt, if enabled. You can clear this bit by writing a '1' to this
bit.
This bit signals frame's ending boundary to the CPU and also indicates that
no frame error occurred. It is set when the last data byte of a frame is
transferred into the last location of the Rx FIFO and is available to be read.
The RxIDLE status bit indicates that a minimum of 15 consecutive 1s have
been received. The event is stored in the status register and can be used
to trigger a receiver interrupt. The RxIDLE bit continues to reflect the
inactive idle condition until a '0' is received. You can clear this bit by
writing a '1' to this bit.
The RxABT status bit is set to '1' when seven or more consecutive 1s
(abort sequence) have been received. When an abort is received in an 'in-
frame' condition, the event is stored in the status register triggering an
interrupt request. You can clear this bit by writing a '1' to this bit.
The RxCRCE status bit is set a frame is completed with a CRC error.
The RxNO bit is set to '1', if received data is non-octet aligned frame.
The RxOV status bit is set to '1', if the data received is transferred into the
HRXFIFO when it is full, resulting in a loss of data. Continued overruns
destroy data in the first FIFO register.
This bit is set when there is no more buffer during receiving data. If this bit
is set, DRxEN bit is cleared. You can clear this bit by writing '1' to this bit.
Not applicable.
This bit is set to '1' when abort signal is sent due to the Tx underrun or CTS
lost occurred. If this bit is set, DTxEN(in HCON) bit cleared. You can clear
this bit by writing '1' to this bit.
Description
HDLC CONTROLLERS
8-37
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