Singmai Electronics PT9, User Manual

Page: 25 / 38

SingMai Electronics
PT9 User Manual Revision 0.3 Page 25 of 38
11. Default Register Settings
Table 8 shows the default register settings for the video standards supported by PT9. On assertion
of RESETn the NTSC-M standard settings are loaded into the registers.
Note that, if Control Register bit 7 is asserted (Auto-register = ‘1’), then the hard-wired values will
be used by PT9 depending on the video standard selected by Control Register 1, bits [5:4]. The
hard-wired values are those shown in Table 8.
Also note that, for the 525 line standard, the horizontal timing values ‘wrap’ at 1715
10
($6B3) and
the vertical values at 524
10
($20C). For the 625 line standard, the horizontal timing values ‘wrap’ at
1727
10
($6BF) and the vertical values at 624
10
($270).
R
e
g
iste
r
Offs
e
t
Register Name
PA
L-
B
/D
/G
PA
L-
I
PA
L-
N
PA
L-
M
NTS
C
-M
NTS
C
-J
Comments
$00 Control 1 $C0 $C0 $C0 $C0 $C0 $C0
Auto standard, auto
register.
$01 Control 2 $20 $20 $20 $20 $20 $20
Sinx/x on. Luma/chroma
comb off.
$02 Pre-emphasis $00 $00 $00 $00 $00 $00
Timing registers
$03 H Phase 1 239 239 239 254 254 254
$04 H Phase 2 5 5 5 5 5 5
$05 V Phase 1 112 112 112 9 9 9
$06 V Phase 2 2 2 2 2 2 2
$0B H Sync start 1 32 32 32 32 32 32
$0C H Sync start 2 0 0 0 0 0 0
$0D H Sync end 1 159 159 159 159 159 159
$0E H Sync end 2 0 0 0 0 0 0
$0F H blank start 1 20 20 20 20 20 20
$10 H blank start 2 1 1 1 1 1 1
$11 H blank end 1 0 0 0 0 0 0 PAL-I front porch is 1.65µs
$12 H blank end 2 0 0 0 0 0 0
$13 Pedestal start 1 35 35 35 35 35 35
$14 Pedestal start 2 1 1 1 1 1 1
$15 Pedestal end 1 0 0 0 0 0 0
$16 Pedestal end 2 0 0 0 0 0 0
$17 Half line start 1 128 128 128 122 122 122
$18 Half line start 2 3 3 3 3 3 3
$19 Equalising1 end 1 95 95 95 94 94 94
$1A Equalising1 end 2 0 0 0 0 0 0
$1B Equalising2 end 1 191 191 191 184 184 184
$1C Equalising2 end 2 3 3 3 3 3 3
$1D Broad1 end 1 1 1 1 251 251 251
$1E Broad1 end 2 3 3 3 2 2 2
$1F Broad2 end 1 97 97 97 85 85 85
$20 Broad2 end 2 6 6 6 6 6 6
$21 Burst gate start 1 139 139 139 120 120 120
$22 Burst gate start 2 0 0 0 0 0 0
$23 Burst gate end 1 206 206 206 187 187 187
$24 Burst gate end 2 0 0 0 0 0 0
$25 FSc1 $CB $CB $46 $D5 $26 $26
$26 FSc2 $8A $8A $94 $EF $7C $7C
$27 FSc3 $09 $09 $F6 $E6 $F0 $F0
$28 FSc4 $2A $2A $21 $21 $21 $21
$29 NTSC Hue 1 $00 $00 $00 $00 $00 $00
$2A NTSC Hue 2 $00 $00 $00 $00 $00 $00
Proc-amp control Proc-amp control