STK6001 Syntec Semiconductor, STK6001 Datasheet - Page 34

• Manufacturer Part Number: STK6001
• Description: Scaler
• Manufacturer: Syntec Semiconductor

The auto. Detecting circuit provides two methods shown below to detect if the frequency and phase of
input video are suitable.
TGX[11:0]
TGY[11:0]
TogRate[3:0]
LVD[15:0]
EQC[4:0]
The auto. Detecting circuit can find which changing level of video data in the input video is more
frequent and then reveals its position (TGX, TGY) and its changing level (TogRate). With this
information, you can set the captured position (SetX, SetY) to capture the data of input video. 16
adjoin input video data (LVD) can be continuously captured in each Frame, and the video data
captured in the last Frame will be automatically compared. The result after compared will be put in
EQC. The Threshold set by GateR, GateG, and GateB will confine the video data captured.
Track[28:0]
Slope
GateDif[4:0]
The other way provided by the auto. Detecting circuit is to count the variable of input video data. Two
parameters must be set: to select the changing direction (Slope) and to decide the Threshold (GateDif)
of changing slope (ΔP7 or ΔP8) when the condition meets the setting slope and the changing slope
ΔPn > GateDif, the changing slope (ΔPn) will be accumulated, and each Frame will be output to
Track.
The auto. Detecting circuit detects the operation of internal Buffer, which offers the required information for
user’s reference to set the parameters.
1. SyncPosH: When the input video captured circuit dispatches a signal to require the output circuit to start
2.3.4 Source Clock Phase Measurement
2.3.5 Buffer Status Detection
SyncPosH[10:0]
SyncPosV[10:0]
PosSyncH[10:0]
BufUsage[11:0]
Over
Under
will know if the last output Hsync, signal is very close to the first output Hsync. signal to do
to output the image, the position of horizontal counter will be output. With the parameter, we
the necessary adjustment. The parameter depends on the output video (PCLK).
Video
Level
Slope = 0
{0x91, 0x90}
{0x93, 0x92}
{0x94}
{0x96, 0x95}
{0x97}
{0xA1, 0xA0, 0x9F, 0x9E}
{0x77[5]}
{0x77[4:0]}
P1
{0xA3, 0xA2}
{0xA5, 0xA4}
{0xA7, 0xA6}
{0xAC, 0xAB}
{0x80[6]}
{0x80[5]}
P2
Slope = 1
P3
STK96C100
P4
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P5
SetX[11:0]
SetY[11:0]
P6
P7
ΔP7
P8
t
ΔP8
{0x74, 0x73}
{0x76, 0x75}