SAA7114HV2 NXP Semiconductors, SAA7114HV2 Datasheet - Page 70
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SAA7114HV2
Manufacturer Part Number
SAA7114HV2
Description
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7114HV2.pdf
(144 pages)
Specifications of SAA7114HV2
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Philips Semiconductors
SAA7114_3
Product data sheet
9.4.2 X port configured as input
9.5 Image port (I port)
Table 32:
If the data input mode is selected at the expansion port, then the scaler can select its input
data stream from the on-chip video decoder, or from the expansion port (controlled by bit
SCSRC[1:0] 91h[5:4]). Byte serial Y-C
schemes, or raw samples from an external ADC may be input (see also bits FSC[2:0]
91h[2:0]). The input stream must be accompanied by an external clock (XCLK), qualifier
XDQ and reference signals XRH and XRV. Instead of the reference signal, embedded
SAV and EAV codes according to ITU 656 are also accepted. The protection bits are not
evaluated.
XRH and XRV carry the horizontal and vertical synchronization signals for the digital
video stream through the expansion port. The field ID of the input video stream is carried
in the phase (edge) of XRV and state of XRH, or directly as FS (frame sync, odd/even
signal) on the XRV pin (controlled by XFDV[92h[7]], XFDH[92h[6]] and XDV[1:0] 92h[5:4]).
The trigger events on XRH (rising/falling edge) and XRV (rising/falling/both edges) for the
scalers acquisition window are defined by XDV[1:0] 92h[5:4] and XDH[92h[2]]. The signal
polarity of the qualifier can also be defined (bit XDQ[92h[1]]). Alternatively to a qualifier,
the input clock can be applied to a gated clock (clock gated with a data qualifier, controlled
by bit XCKS[92h[0]]). In this event, all input data will be qualified.
The image port transfers data from the scaler as well as from the VBI data slicer, if
selected (maximum 33 MHz). The reference clock is available at the ICLK pin, as an
output, or as an input (maximum 33 MHz). As output, ICLK is derived from the line-locked
decoder or expansion port input clock. The data stream from the scaler output is normally
discontinuous. Therefore valid data during a clock cycle is accompanied by a data
qualifying (data valid) flag on pin IDQ. For pin constrained applications the IDQ pin can be
programmed to function as a gated clock output (bit ICKS2[80h[2]]).
The data formats at the image port are defined in Dwords of 32 bits (4 bytes), such as the
related FIFO structures. However the physical data stream at the image port is only 16-bit
or 8-bit wide; in 16-bit mode data pins HPD7 to HPD0 are used for chrominance data. The
four bytes of the Dwords are serialized in words or bytes.
Line number
1 to 22
23
24 to 309
310
311 and 312
313 to 335
336
337 to 622
623
624 and 625
625 lines/50 Hz vertical timing
F (ITU 656)
0
0
0
0
0
1
1
1
1
1
Rev. 03 — 17 January 2006
V
OFTS[2:0] = 000
(ITU 656)
1
0
0
0
1
1
0
0
0
1
B
-C
R
4 : 2 : 2, or subsets for other sampling
OFTS[1:0] = 10
according to selected VGATE position
type via VSTA and VSTO
(subaddresses 15h to 17h);
see
PAL/NTSC/SECAM video decoder
Table 60
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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Table 62
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