saa7130hl-v1 NXP Semiconductors, saa7130hl-v1 Datasheet - Page 25

• Manufacturer Part Number: saa7130hl-v1
• Description: Pci Video Broadcast Decoder
• Manufacturer: NXP Semiconductors

Philips Semiconductors
SAA7130HL_4
Product data sheet
Fig 10. Scaler task processing with DMA interfacing
Two video capture tasks can be processed in an alternating manner, without the need to re-program any scaling
parameters or DMA definition.
alternating processing task A/B
VBI region, raw samples
VBI region, raw samples
VBI region, raw samples
VBI region, raw samples
active video area
active video area
active video area
active video area
video region (B)
- skipped for field rate reduction
video region - scaled down CIF
video region (A) - cropped
video region (A) - cropped
2nd field (even, FID = 1)
4th field (even, FID = 1)
3rd field (odd, FID = 0)
1st field (odd, FID = 0)
scaling
scaling
scaling
sample rate
sample rate
sample rate
sample rate
Rev. 04 — 11 April 2006
1st buffer (upper field)
PCI video broadcast decoder
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
1st buffer (A)
2nd buffer (A)
3rd buffer (B)
4th buffer (B)
2nd buffer (lower field)
video DMA (A)
e.g. interlaced
1st buffer
2nd buffer
(next frame)
video DMA (B)
e.g. single FID
SAA7130HL
VBI DMA
mhb998
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