SAA7102_06 NXP [NXP Semiconductors], SAA7102_06 Datasheet - Page 75

• Manufacturer Part Number: SAA7102_06
• Description: Digital video encoder
• Manufacturer: NXP [NXP Semiconductors]

Philips Semiconductors
Table 111: Digital output signals conversion range
SAA7102_SAA7103_4
Product data sheet
Set/out
Digital settings
Digital output
Analog settings
Analog output
12.1 Analog output voltages
12.2 Suggestions for a board layout
CVBS, sync tip-to-white
see
1014
e.g. B DAC = 1Fh
1.23 V (p-p)
Table 52
The analog output voltages are dependent on the total load (typical value 37.5 Ω), the
digital gain parameters and the I
settings).
The digital output signals in front of the DACs under nominal (nominal here stands for the
settings given in
conditions occupy different conversion ranges, as indicated in
bar signal.
By setting the reference currents of the DACs as shown in
amplitudes can be achieved for all signal combinations; it is assumed that in
subaddress 16h, parameter DACF = 0000b, that means the fine adjustment for all DACs
in common is set to 0 %.
If S-video output is desired, the adjustment for the C (chrominance subcarrier) output
should be identical to the one for VBS (luminance plus sync) output.
Use separate ground planes for analog and digital ground. Connect these planes only at
one point directly under the device, by using a 0 Ω resistor directly at the supply stage.
Use separate supply lines for the analog and digital supply. Place the supply decoupling
capacitors close to the supply pins.
Use L
minimize radiation energy (EMC).
Fig 17. FLTR0, FLTR1 and FLTR2 of
bead
to
Table 56
(ferrite coil) in each digital supply line close to the decoupling capacitors to
Table 52
FIN
Rev. 04 — 18 January 2006
VBS, sync tip-to-white
see
881
e.g. G DAC = 1Bh
1.00 V (p-p)
to
Table 52
Table 56
390 pF
2
C10
C-bus settings of the DAC reference currents (analog
Figure 16
to
for example a standard PAL or NTSC signal)
JP11
Table 56
120 pF
2.7 µH
C16
FILTER 1
L2
= byp.
ll act.
JP12
SAA7102; SAA7103
AGND
C13
560 pF
RGB, black-to-white
see
876
e.g. R DAC = G DAC = B DAC = 0Bh
0.70 V (p-p)
2.7 µH
L3
Table 46
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Table
Table 111
mhb912
FOUT
and
111, standard compliant
Digital video encoder
Table 47
for a
100
⁄
100
75 of 84
color