SAA7158WP View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SAA7158WP

Back END IC

Philips Electronics 

Philips Semiconductors

Back END IC

Preliminary specification

SAA7158

ADDRESS (HEX)

7C

7D

7E

7F

FUNCTION

multiplexer setting

multiplexer setting

multiplexer setting

multiplexer setting

BIT

SET select field1 OFF; select median OFF (all databits are dummy)

SET select field1 ON; select median OFF (all databits are dummy)

SET select field1 OFF; select median ON (all databits are dummy)

SET select field1 ON; select median ON (all databits are dummy)

The function of the bits in the control datawords are explained below:

feedback

4:4:4

HI: feedback output is 3-state enabled = outputs active

HI: YUV-4:4:4 mode selected instead of 4:1:1 mode

Yclip

UVbin

UV8bit

invUV

grey(3:0)

bln_d(1:0)

re2_d(1:0)

re1_d(1:0)

inv_re2

HI: Y signal after peaking is clipped and converted to 9-bit range

HI: UV signals are taken from input as binary signals instead 2’s complement

HI: UV signals are taken from input as 8-bit values instead of 7-bit

HI: UV signals are inverted before the DACs (outputs = −U and −V)

determines highest 4 bits in shade of grey in side panels

shifts the internal BLN signal from 0 to 3 clock pulses with respect to input

shifts 5 to 8 clock pulses the RE2 output signal versus input

shifts 5 to 8 clock pulses the RE1 output signal versus input, additionally influenced by zoom

HI: RE2 output is polarity reversed in relation to RE2 input

inv_re1

zoom(4:0)

black16

pixrep

HI: RE1 output is polarity reversed in relation to RE1 input

determines vertical zoom factor, which is (32/zoom(4:0)); zoom(4:0) = 0 is equivalent to no zoom

HI: the Y signal value during the blanking period is 16 instead of 0

HI: side panels have the same Y, U and V as on the edge of the last video information

Ips

range(1:0)

gain(1:0)

coring(1:0)

av_w_med

BP(1:0)

WG(1:0)

BFB

HI: functional test mode for line on line median on/off

determines maximum in CTI range of looking back/looking forward

determines gain of CTI function

determines coring level in Y peaking

enable average UV while median in Y (UV := 1/2 × direct + 1/2 × delayed)

determines frequency response in Y peaking

determines weighted addition in Y peaking with 1 or 1/2 or 1/4 or 0

HI: determines bypass for BF1 in Y peaking

The BENDIC provides the correlation of two subsequent fields with its ‘Movie phase detector’ via the µP interface. The

MSB or LSB values of this correlation factor is read from the BENDIC by sending an addressbyte and subsequently

receiving a databyte from it, according to Table 2.

July 1994

12

Share Link: