TDA4887PS Datasheet, PDF (35/68 Pages) NXP Semiconductors – 160 MHz bus-controlled monitor video preamplifier

Philips Semiconductors
160 MHz bus-controlled monitor video
preamplifier
Product specification
TDA4887PS
Table 5 Control register
BIT
DISO = 0
DISO = 1
DISV = 0
DISV = 1
FPOL = 0
FPOL = 1
BRI = 0
BRI = 1
FUNCTION
OSD signals enabled
OSD signals disabled
video signals enabled
video signals disabled
negative feedback polarity; pins 23, 20 and 17 as feedback inputs; no external DAC voltage outputs
positive feedback polarity; pins 23, 20 and 17 as external DAC voltage outputs; internal feedback of
signal outputs
internal brightness control with grey scale tracking
Brightness control without grey scale tracking. With FPOL = 0 the brightness information is combined
with the internal feedback reference voltages. With FPOL = 1 the brightness information is combined
with the DAC output voltages for DC restoration at the cathodes.
2001 Oct 19
35