CONTROL REGISTERSS3C84E5/C84E9/P84E9

UARTPND — UART Pending and parity control

F4H Set 1, Bank 0

Bit Identifier

Reset Value

Read/Write

.7–.6

.5

.7

.6

.5

.4

.3

.2

.1

.0

 

 

 

 

 

 

 

 

0

0

0

0

0

0

0

0

R/W

R/W

R/W

R/W

Not used for the S3C84E5/C84E9/P84E9 (must keep always 0)

UART Parity Enable/Disable (PEN)

0Disable

1Enable

.4

UART Receive Parity Error (RPE)

0No error

1Parity error

.3–.2

.1

Not used for the S3C84E5/C84E9/P84E9 (must keep always 0)

UART Receive Interrupt Pending Flag

0 Not pending

0Clear pending bit (when write)

1Interrupt pending

.0

UART Transmit Interrupt Pending Flag

 

0

Not pending

 

 

 

 

0

Clear pending bit (when write)

 

 

 

 

1

Interrupt pending

 

 

 

NOTES:

1.In order to clear a data transmit or receive interrupt pending flag, you must write a "0" to the appropriate pending bit.

2.To avoid programming errors, we recommend using load instruction (except for LDB), when manipulating UARTPND values.

3.Parity enable and parity error check can be available in 9 -bit UART mode (Mode 2) only.

4.Parity error bit (RPE) will be refreshed whenever 8th receive data bit has been shifted.

4-40

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Samsung S3C84E5 user manual Uartpnd Uart Pending and parity control F4H Set 1, Bank