Singmai Electronics PT9, Руководство пользователя

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SingMai Electronics
PT9 User Manual Revision 0.3 Page 21 of 38
Register
Offset
Register Name R/W Bit Value Description
Freerun mode the standard selected will be the manual setting
from bits 5 and 4 of control register 1. (Default = ‘0’).
$02 Pre-emphasis R/W 8-bit value used to set the degree of pre-emphasis on the video
output. Value ‘0’ is no pre-emphasis (default value) and value ‘255’
is maximum pre-emphasis which is approxi12dB of high
frequency boost.
Timing registers
$03 H Phase 1 R/W Delay between BT656 SAV TRS and SPG horizontal outputs.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). 11 bit value =
(HPhase2[2:0],HPhase1[7:0]). See figures 15 and 16.
$04 H Phase 2 R/W
$05 V Phase 1 R/W Delay between BT656 1>0 transition of FFlag and SPG vertical
outputs. Increments of horizontal lines. Maximum value =524 or
624 depending on the line standard. 10 bit value =
(VPhase2[1:0],VPhase1[7:0]).
$06 V Phase 2 R/W
$0B H Sync start 1 R/W Delay between H Phase reset and start of horizontal sync pulse.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). 11 bit value =
(HSyncstart2[2:0],HSyncstart1[7:0]).
$0C H Sync start 2 R/W
$0D H Sync end 1 R/W Delay between H Phase reset and end of horizontal sync pulse.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). H Sync end – H Sync
start * 1/27MHz is the horizontal sync pulse width, nominally 4.7us.
11 bit value = (HSyncend2[2:0],HSyncend1[7:0]).
$0E H Sync end 2 R/W
$0F H blank start 1 R/W Delay between H Phase reset and start of horizontal blanking.
Increments of 1/27MHz Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). 11 bit value =
(Hblankstart2[2:0],Hblankstart1[7:0]).
$10 H blank start 2 R/W
$11 H blank end 1 R/W Delay between H Phase reset and end of horizontal blanking.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). H blank end – H
blank start * 1/27MHz is the blanking width, nominally 52us. 11 bit
value = (Hblankend2[2:0],Hblankend1[7:0]).
$12 H blank end 2 R/W
$13 Pedestal start 1 R/W Delay between H Phase reset and start of pedestal insertion (for
525 line standards only). Increments of 1/27MHz Maximum value =
1715. 11 bit value = (Pedestalstart2[2:0],Pedestalstart1[7:0]).
$14 Pedestal start 2 R/W
$15 Pedestal end 1 R/W Delay between H Phase reset and end of pedestal insertion (for
525 line standards only). Increments of 1/27MHz. Maximum value =
1715. Pedestal end – Pedestal start * 1/27MHz is the pedestal
insertion pulse width, nominally 52us. 11 bit value =
(Pedestalend2[2:0],Pedestalend1[7:0]).
$16 Pedestal end 2 R/W
$17 Half line start 1 R/W Position of the half line = 32us, referenced to H Phase reset.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). 11 bit value =
(Halflinestart2[2:0],Halflinestart1[7:0]).
Half line end is H Sync start position.
$18 Half line start 2 R/W
$19 Equalising1 end 1 R/W Width of the first equalizing pulse whose leading edge is
HSyncstart. Increments of 1/27MHz. Maximum value = 1715 or 1727
depending on the line standard (525 or 625 respectively). HSync
start – Equalising 1 end * 1/27MHz is the equalizing pulse width,
nominally 2.35us. 11 bit value =
(Equalising1end2[2:0],Equalising1end1[7:0])
$1A Equalising1 end 2 R/W
$1B Equalising2 end 1 R/W Width of the second equalizing pulse whose leading edge is Half
line start. Increments of 1/27MHz. Maximum value = 1715 or 1727
depending on the line standard (525 or 625 respectively). Halfline
start – Equalising 2 end * 1/27MHz is the equalizing pulse width,
nominally 2.35us. 11 bit value =
(Equalising2end2[2:0],Equalising2end1[7:0])
$1C Equalising2 end 2 R/W
$1D Broad1 end 1 R/W Width of the first broad pulse whose leading edge is HSyncstart.
Increments of 1/27MHz. Maximum value = 1715 or 1727 depending
on the line standard (525 or 625 respectively). HSync start – Broad1
end * 1/27MHz is the broad pulse width, nominally 27.3us. 11 bit
value = (Broad1end2[2:0],Broad1end1[7:0])
$1E Broad1 end 2 R/W
$1F Broad2 end 1 R/W Width of the second broad pulse whose leading edge is Half line
start. Increments of 1/27MHz. Maximum value = 1715 or 1727