Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
Table 101 X-port input reference signal definitions; register set A (92H[3:0]) and B (C2H[3:0])
X = don’t care.
CONTROL BITS D3 TO D0
X-PORT INPUT REFERENCE SIGNAL DEFINITIONS
XCODE
XDH
XDQ
XCKS
XCLK input clock and XDQ input qualifier are needed
Data rate is defined by XCLK only, no XDQ signal used
Data are qualified at XDQ input at logic 1
X
X
X
X
X
X
0
X
X
X
X
0
X
X
0
0
1
X
X
X
X
X
X
Data are qualified at XDQ input at logic 0
1
Rising edge of XRH input is horizontal reference
Falling edge of XRH input is horizontal reference
Reference signals are taken from XRH and XRV
Reference signals are decoded from EAV and SAV
X
X
X
X
1
X
X
1
Table 102 X-port input reference signal definitions; register set A (92H[7:4]) and B (C2H[7:4])
X = don’t care.
CONTROL BITS D7 TO D4
SCALER INPUT REFERENCE SIGNAL DEFINITIONS
XFDV
XFDH
XDV1
XDV0
Rising edge of XRV input and decoder V123 is vertical reference
Falling edge of XRV input and decoder V123 is vertical reference
XRV is a V-sync or V-gate signal
X
X
X
X
X
X
X
X
X
X
0
1
0
1
X
X
XRV is a frame sync, V-pulses are generated internally on both edges of
FS input
X-port field ID is state of XRH at reference edge on XRV (defined by
XFDV)
X
0
X
X
Field ID (decoder and X-port field ID) is inverted
X
0
1
1
X
X
X
X
X
X
X
X
Reference edge for field detection is falling edge of XRV
Reference edge for field detection is rising edge of XRV
2000 Mar 15
119
NXP [ NXP ]
