Texas Instruments TMS320DM648 manual None Clear, Vdctl

Models: TMS320DM648

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Video Port Control Registers

Table 2-6. Video Port Interrupt Status Register (VPIS) Field Descriptions (continued)

Bit

field (1)

symval (1)

Value

Description

17

COVRB

OF(value)

 

Capture overrun on channel B interrupt detected bit. COVRB is set when data in the

 

 

 

 

FIFO was overwritten before being read out (by the EDMA).

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

16

GPIO

OF(value)

 

Video port general purpose I/O interrupt detected bit.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

15

Reserved

-

0

Reserved. The reserved bit location is always read as 0. A value written to this field

 

 

 

 

has no effect.

14

DCNA

OF(value)

 

Display complete not acknowledged. Indicates that the F1D, F2D, or FRMD bit that

 

 

 

 

caused the display complete interrupt was not cleared prior to the start of the next

 

 

 

 

gating field or frame.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

13

DCMP

OF(value)

 

Display complete. Indicates that the entire frame has been driven out of the port. The

 

 

 

 

EDMA complete interrupt can be used to determine when the last data has been

 

 

 

 

transferred from memory to the FIFO.

 

 

 

 

DCMP is set after displaying an entire field or frame (when F1D, F2D or FRMD in

 

 

 

 

VDSTAT are set) depending on the CON, FRAME, DF1, and DF2 control bits in

 

 

 

 

VDCTL.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

12

DUND

OF(value)

 

Display under-run. Indicates that the display FIFO ran out of data.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

11

TICK

OF(value)

 

System time clock tick interrupt detected bit.

 

 

 

 

BT.656, Y/C capture mode or raw data mode - Not used.

 

 

 

 

TCI capture mode -TICK is set when the TCKEN bit in TCICTL is set and the desired

 

 

 

 

number of system time clock ticks has occurred as programmed in TCITICKS.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

10

STC

OF(value)

 

System time clock interrupt detected bit.

 

 

 

 

BT.656, Y/C capture mode or raw data mode - Not used.

 

 

 

 

TCI capture mode - STC is set when the system time clock reaches an absolute time

 

 

 

 

as programmed in TCISTCMPL and TCISTCMPM registers and the STEN bit in

 

 

 

 

TCICTL is set.

 

 

DEFAULT

0

No interrupt is detected.

 

 

NONE

 

 

 

 

CLEAR

1

Interrupt is detected. Bit is cleared.

9-8

Reserved

-

0

Reserved. The reserved bit location is always read as 0. A value written to this field

 

 

 

 

has no effect.

42

Video Port

SPRUEM1 –May 2007

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Texas Instruments TMS320DM648 manual None Clear, Vdctl