ISL51002 Datasheet, PDF (19/32 Pages) Intersil Corporation – 10-Bit Video Analog Front End (AFE) with Measurement and Auto-Adjust Features

ISL51002
Register Listing (Continued)
ADDRESS
REGISTER
(DEFAULT VALUE)
BITS
FUNCTION NAME
0x44
VSYNC Period MSB, (read
only)
3:0 VSYNC Period MSB
0x45
VSYNC Period LSB, (read
only)
7:0 VSYNC Period LSB
DESCRIPTION
These bit report a 12-bit value containing the width of one
frame (= 2 fields for interlaced, = 1 field for progressive) of
video.
VSYNC period for measured channel =
256* VSYNC Period MSB + VSYNC Period LSB
Units are either number of HSYNC periods or number of
fCRYSTAL/512 periods, depending on setting of VSYNC Units
register.
0x46
VSYNC Width,
(read only)
6:0 VSYNC Width
This register reports a 7-bit value containing the width the
VSYNC pulse. The value returned is for true VSYNC only: it
does not include serrations, EQ pulses, Macrovision pulses,
etc. Units are either number of HSYNC periods or number of
fCRYSTAL/512 periods, depending on setting of VSYNC Units
register.
0x47
0x48
DE Start MSB, (0x00)
DE Start LSB, (0xF6)
1:0 DE Start MSB
7:0 DE Start LSB
10-bit value containing the number of pixel clocks between the
trailing edge of HSout and the first valid pixel. SXGA default
values.
0x49
0x4A
DE Width MSB, (0x05)
DE Width LSB, (0x00)
3:0 DE Width MSB
7:0 DE Width LSB
12-bit value containing the number of visible image pixels.
SXGA default values.
0x4B
0x4C
Line Start MSB, (0x00)
Line Start LSB, (0x26)
1:0 Line Start MSB
7:0 Line Start LSB
10-bit value containing the number of lines between the trailing
edge of VSYNCOUT and the first valid line. SXGA default
values.
0x4D
0x4E
Line Width MSB, (0x04)
Line Width LSB, (0x00)
3:0 Line Width MSB
7:0 Line Width LSB
12-bit value containing the number of visible lines.
SXGA default values.
0x4F
Measurement Configuration,
(0x00)
0 VSYNC Units
0: VSYNC measurement reported in units of lines
(HSYNC periods)
1: VSYNC measurement reported in units of 512 crystal clock
periods
1 VSYNC_Linecount_Mode 0: New method (Integer count of HSouts)
1: Old method (Time measurement with rounding errors)
AUTO ADJUST REGISTERS
0x50
Phase ADJ CMD FN, (0x00) 2:0 PADJ Function
Note: A write to this register executes the command contained
in the three LSBs of the word written. Commands:
000: Reserved
001: Reserved
010: Reserved
011: SetPhase
100: Set DE
101: Reserved
110: Reserved
111: Reserved
0x51
Phase ADJ STATUS,
(read only)
7 PADJ Busy
0: Phase Adjustment function idle
1: Phase Adjustment in progress
19
December 22, 2006