SAF7167AHW/V1,157 NXP Semiconductors, SAF7167AHW/V1,157 Datasheet - Page 8

• Manufacturer Part Number: SAF7167AHW/V1,157
• Description: IC DAC YUV TO RGB 48HTQFP
• Manufacturer: NXP Semiconductors
• Type: RGB Video Amplifierr

Specifications of SAF7167AHW/V1,157

• Applications: Video
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935269523157; SAF7167AHWBR; SAF7167AHWBR

Philips Semiconductors
9397 750 12667
Product data sheet
7.3 Voltage output amplifiers
7.4 I
Table 8:
Since only one control register KD[7:0] provides the data value for pixel data comparison,
when at 2
middle or higher) of each pixel must be the same as KD[7:0] in order to make graphics
colour key active.
The polarity of EXTKEY can be selected with KINV. With KINV = 0, EXTKEY = HIGH
switches analog mixers to select DAC outputs. Before the internal keying signal switches
the analog multiplexers, it can be further delayed up to 7 PCLK cycles with the control bits
KDLY[2:0].
Before the analog input enters the analog mixers, it passes through voltage output
amplifiers. Level shifters are used internally to provide an offset of 0.2 V and an amplifier
gain of 2 for analog inputs to match with the output levels from DACs. After buffering with
voltage output amplifiers, the final RGB outputs can drive a 150
internal resistor, 47
(see
The output voltage level of DAC ranges from the lowest level 0.2 V (zero code) to the
highest level 1.82 V (all one code).
With the digital input YUV video data in accordance with ITU-R BT.601, the RGB output of
8-bit DAC actually ranges from the 16th step (black) to the 235th step (white). Therefore,
after the voltage divider with external serial resistor and monitor load resistor, the output
voltage range to a monitor is approximately 0.7 V (p-p).
Only one control byte is needed for the SAF7167AHW. The I
Table
Table 9:
[1]
[2]
[3]
[4]
[5]
[6]
KMOD[2:0]
100
101
110
111
S
2
C-bus control
[1]
S = START condition.
SLAVE ADDRESS = 1011 111X; X = R/W control bit. X = 0: order to write. X = 1: order to read (not used for
SAF7167AHW).
A = acknowledge; generated by the slave.
SUBADDRESS = subaddress byte.
DATA = data byte.
P = STOP condition.
Figure
9.
SLAVE ADDRESS
KMOD[2:0]
I
2
9).
8-bit or 3
C-bus format
external serial resistor, and 75
Rev. 01 — 29 June 2004
8-bit pixel input modes, it is presumed that all input bytes (lower,
[2]
Pixel type
8-bit pixel
2
2
3
A
[3]
8-bit pixel
8-bit pixel
8-bit pixel
SUBADDRESS
YUV-to-RGB digital-to-analog converter
[4]
load resistor) at the monitor side
A
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
[3]
Remark
pseudo colour mode
high colour mode 1 with pixels
given at both rising and falling
edges of PCLK
high colour mode 2 with pixels
given only at rising edges of
PCLK
true colour mode
SAF7167AHW
2
C-bus format is shown in
DATA
load directly (25
[5]
A
[3]
P
[6]
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