Analog Devices ADSP-BF506F Hardware Reference Manual page 964

PPI Registers
PPI Status Register (PPI_STATUS)
15 14 13 12 11 10
0
ERR_NCOR (Error
Not Corrected)
- W1C
Used only in ITU-R 656
modes
0 - No uncorrected
preamble error
has occurred
1 - Preamble error
detected but not
corrected
ERR_DET (Error
Detected) - W1C
Used only in ITU-R 656
modes
0 - No preamble error
detected
1 - Preamble error
detected
UNDR (FIFO Underrun)
- W1C
0 - No interrupt
1 - FIFO Underrun Error
interrupt occurred
OVR (FIFO Overflow) - W1C
0 - No interrupt
1 - FIFO Overflow Error
interrupt occurred
Figure 20-14. PPI Status Register
The bit is sticky and indicates, when set, that a frame track error
FT_ERR
has occurred. In this condition, the programmed number of lines per
frame in
PPI_FRAME
dition (see the information note
generates a PPI error interrupt, unless this condition is masked off in the
register.
SIC_IMASK
The bit is set or cleared at the same time as the change in state of
FLD
ITU-R 656 modes) or
modes only. The state of
20-30
9 8 7
0 0 0 0 0 0 0 0
does not match up with the "frame start detect" con-
(in other RX modes). It is valid for input
PPI_FS3
reflects the current state of the
FLD
ADSP-BF50x Blackfin Processor Hardware Reference
6 5 4 3 2 1 0
0 0 0 0 0 0 0
LT_ERR_OVR (Horizontal Tracking
Overflow Error) - W1C
Used only in ITU-R 656
modes
0 - No horizontal tracking
overflow error
1 - PPI_COUNT expired before
receiving SAV code
LT_ERR_UNDR (Horizontal Track-
ing Underflow Error) - W1C
0 - No horizontal tracking
underflow error
1 - PPI_FS1 (or SAV code)
received before
PPI_COUNT expired for
that line
FLD (Field Indicator)
0 - Field 1
1 - Field 2
FT_ERR (Frame Track Error)
- W1C
0 - No interrupt
1 - Frame Track Error
interrupt occurred
on page 20-34). A frame track error
Reset = 0x0000
(in
F
or
F PPI_FS3