Philips Semiconductors
Preliminary specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI-data slicer and high performance scaler
SAA7114H
15.3.2 SUBADDRESSES 34H TO 36H
Table 66 Audio master clock (AMCLK) nominal increment
SUBADDRESS
CONTROL BITS D7 TO D0
34H
35H
36H
ACNI7
ACNI15
−
ACNI6
ACNI14
−
ACNI5
ACNI13
ACNI21
ACNI4
ACNI12
ACNI20
ACNI3
ACNI11
ACNI19
ACNI2
ACNI10
ACNI18
ACNI1
ACNI9
ACNI17
ACNI0
ACNI8
ACNI16
15.3.3 SUBADDRESS 38H
Table 67 Clock ratio AMCLK (audio master clock) to ASCLK (serial bit clock)
SUBADDRESS
CONTROL BITS D7 TO D0
SDIV4 SDIV3
38H
−
−
SDIV5
SDIV2
SDIV1
SDIV0
15.3.4 SUBADDRESS 39H
Table 68 Clock ratio ASCLK (serial bit clock) to ALRCLK (channel select clock)
SUBADDRESS
CONTROL BITS D7 TO D0
LRDIV4 LRDIV3
39H
−
−
LRDIV5
LRDIV2
LRDIV1
LRDIV0
15.3.5 SUBADDRESS 3AH
Table 69 Audio clock control; 3AH[3:0]
BIT DESCRIPTION SYMBOL VALUE
FUNCTION
D3 audio PLL modes
APLL
AMVR
LRPH
SCPH
0
1
0
1
0
1
0
1
PLL active, AMCLK is field-locked
PLL open, AMCLK is free-running
D2 audio master clock
vertical reference
vertical reference pulse is taken from internal decoder
vertical reference is taken from XRV input (expansion port)
ALRCLK edges triggered by falling edges of ASCLK
ALRCLK edges triggered by rising edges of ASCLK
ASCLK edges triggered by falling edges of AMCLK
ASCLK edges triggered by rising edges of AMCLK
D1
ALRCLK phase
D0 ASCLK phase
15.4 Programming register VBI-data slicer
15.4.1 SUBADDRESS 40H
Table 70 Slicer control 1; 40H[6:4]
BIT
DESCRIPTION
SYMBOL VALUE
FUNCTION
D6 Hamming check
HAM_N
0
Hamming check for 2 bytes after framing code,
dependent on data type (default)
1
0
1
0
1
no Hamming check
D5 framing code error
D4 amplitude searching
FCE
one framing code error allowed
no framing code errors allowed
amplitude searching active (default)
amplitude searching stopped
HUNT_N
2000 Mar 15
107
NXP [ NXP ]
