FMS9884A Datasheet, PDF (6/29 Pages) Fairchild Semiconductor – 3x8-Bit, 108/140/175 Ms/s Triple Video A/D Converter with Clamps

PRODUCT SPECIFICATION
FMS9884A
Pin Descriptions (Continued)
Pin
Name
Pin No.
Power and Ground
V_DDA
4, 8, 10, 11, 16, 18, 19, 23,
25, 124, 128
V_DDP
33,34,43,48,50
V_DDO
GND
V_REFIN
54, 64, 74, 84, 94, 104, 114,
120
5, 6, 9,12, 13, 17, 20, 21, 24,
26, 35, 39, 42, 47, 49, 51, 52,
53, 63, 73, 83, 93, 103, 113,
119, 121, 122, 123
127
V_REFOUT
126
Pin Function Description
ADC Supply Voltages. Provide a quiet noise free voltage.
PLL Supply Voltage. Most sensitive supply voltage. Provide a very
quiet noise free voltage.
Digital Output Supply Voltage. Decouple judiciously to avoid
propagation of switching noise.
Ground. Returns for all power supplies. Connect ground pins to a
solid ground plane.
Voltage Reference Input. Common reference input to RGB
converters. Connect to VREFOUT, if internal reference is used.
Voltage Reference Output. Internal band-gap reference output. Tie
to ground through a 0.1µF capacitor.
Addressable Memory
Register Map
Name
PLLN_11-4
PLLN_3-0
GR_7-0
GG_7-0
GB_7-0
OSR_5-0
OSG_5-0
OSB_5-0
CD_7-0
CW_7-0
CONFIG1
Address
00
01
02
03
04
05
06
07
08
09
0A
Function
PLL divide ratio, MSBs. PLLN + 1 = total number of
pixels per horixontal line.
PLL divide ratio, LSBs. PLLN + 1 = total number of pixels
per horizontal line. PLLN_3-0 stored in the four upper
register bits 7-4.
PLLN_3–0 X X X X
Gain, red channel. Adjustable from 70 to 140%.
Gain, green channel. Adjustable from 70 to 140%.
Gain, blue channel. Adjustable from 70 to 140%.
Offset, red channel. OSR_5-0 stored in the six upper
register bits 7-2. Default value is decimal 32.
OSR_5–0
XX
Offset, green channel. OSG_5-0 stored in the six upper
register bits 7-2. Default value is decimal 32.
OSG_5–0
XX
Offset, blue channel. OSB_5-0 stored in the six upper
register bits 7-2. Default value is decimal 32.
OSB_5–0
XX
Clamp delay. Delay in pixels from trailing edge of
horizontal sync.
Clamp width. Width of clamp pulse in pixels.
Configuration Register No. 1
Default (hex)
69 (1693)
D0 (1693)
80
80
80
80
80
80
80
80
F4
6
REV. 1.2.2 12/7/01