hmp8190 Intersil Corporation, hmp8190 Datasheet - Page 23

• Manufacturer Part Number: hmp8190
• Description: Ntsc/pal Video Encoder
• Manufacturer: Intersil Corporation

Pin Descriptions
FS_ADJUST
NTSC/PAL
COMP 1
COMP 2
RESET
NAME
VREF
GND
SCL
SDA
VAA
PIN
SA
Y
C
NUMBER
PIN
18
19
20
25
11
61
62
64
63
3
7
(Continued)
23
OUTPUT
INPUT/
I/O
I/O
O
O
O
I
I
I
I
nected to VAA.
I
I
tor connected to VAA.
Reset Control Input. A logical zero for a minimum of four CLK cycles resets the device. RE-
SET must be a logical one for normal operation.
Luminance Analog Current Output. This output contains luminance video, sync, blanking,
and information. It is capable of driving a 37.5
GND and the DAC should be powered down.
Chrominance Analog Current Output. This output contains chrominance video, and blanking
information. It is capable of driving a 37.5 load. If not used, it should be connected to GND
and the DAC should be powered down.
Composite Video Analog Current Output. This output contains composite video, sync, blank-
ing, and information. It is capable of driving a 37.5 load. If not used, it should be connected
to GND and the DAC should be powered down.
Voltage Reference. An optional external 1.235V reference may be used to drive this pin. If
left floating, the internal voltage reference is used.
Full Scale Adjust Control. A resistor (RSET) connected between this pin and GND sets the
full-scale output current of each of the DACs.
Compensation Pin. A 0.1 F ceramic chip capacitor should be connected between this pin
and VAA, as close to the device as possible.
Compensation Pin. A 0.1 F ceramic chip capacitor should be connected between this pin
and VAA as close to the device as possible.
+5V Power. A 0.1 F ceramic capacitor, in parallel with a 0.01 F chip capacitor, should be
used between each group of VAA pins and GND. These should be as close to the device as
possible.
Ground.
2
2
2
C Interface Clock Input. The circuit for this pin should include a 4-6k pull-up resistor con-
C Interface Address Select Input.
C Interface Data Input/Output. The circuit for this pin should include a 4-6k pull-up resis-
HMP8190, HMP8191
DESCRIPTION
load. If not used, it should be connected to