SDA9257 Infineon Technologies Corporation, SDA9257 Datasheet - Page 25

• Manufacturer Part Number: SDA9257
• Description: Clock SYNC Generator
• Manufacturer: Infineon Technologies Corporation

2.3.3 Pulse Generation
The clock sync generator supplies the following pulses:
• HS
• VS
• BLN
• Two clamping pulses H1 and H2. H2 is also the internal clamping pulse of
• The HS pulse is 16 13.5 MHz clock periods long and can be shifted by the
• For the VS pulse refer to vertical noise suppression.
• With the BLN pulse the start time (high-to-low edge) and the stop time (low-to-high
• During the BLN pulse the Y-U-V output data are set to their clamping level.
• For pulse H1 the start time (low-to-high edge) and stop time can be set in increments
• For pulse H2 the start time (low-to-high edge) and stop time can be set in increments
The timing of the BLN, H1, H2, VS and HS pulses can be set by the costumer using the
specified
Figure 16
I
Semiconductor Group
2
C-Bus Programming Areas of Horizontal-Frequency Pulses
the YUV-ADCs.
increments of four 13.5 MHz clock periods.
edge) can be set within a certain range of lines in increments of 13.5 MHz clock
periods by
the field blanking interval.
of two 13.5 MHz clock periods.
of 13.5 MHz clock periods.
I
2
C-Bus bits. Figure 9 shows the ranges of those settings.
SYNC
HS
H1
H2
BLN
All times are given in relation to the Reference Time!
All times are only valid for 2FH = 0. If 2FH = 1 all times have to be divided by two!
I
2
C Bus. The timing of BLN does not change during
HSON
H1ON (-28.27 s ... 9.47 s)
H2ON (-4.67 s ... 14.21 s)
(-35.22 s ... 28.42 s)
BON (-8.89 s ... 9.99 s)
Reference Time
approx. 2.6 s
25
approx. 1.2 s
H1OF (-28.27 s ... 9.47 s)
BOF (0.59 s ... 19.46 s)
H2OF (-4.67 s ... 14.21 s)
BURST
UET10465
SDA 9206
I
1999-02-10
2
C-Bus in