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STK6005

Notes:

1. The frequency derived from PLL frequency synthesizer is formulated as follows:

Fout (PCLK) = Fin * NF / (NR * NO).

Where

NF = PLL_M[8:0] + 2

NR = PLL_N[4:0] + 2

NO = 1 / 2 / 2 / 4 when PLL_OD[1:0] = 00 / 01 / 10 / 11

2. Meanwhile, the following constraints must be followed:

Fref = Fin / (NR * 2)

The comparison frequency (Fref) should be in the range of 800KHz to 8MHz.

Fvco = Fin * NF / NR

The output frequency of VCO should be in the range of 100MHz to 200MHz.

5.13 OSD Control

Display Area of OSD

The following diagram shows the display area definition of STK6005 OSD.

Register Width and Length of the unit is in characters; others are in lines or pixels. The values of

registers StartV and StartH are calculated from the synchronous point of panel output.

Architecture of the OSD (On-Screen Display)

STK6005 provides up to 256 sets of characters and attributes to display the OSD contents. Provided is

that 128 internal soft fonts (12 * 18 dots) can be selected to display for each character. The 8-bit attribute of

each character consists of the foreground color and background color indices mapped to 16 colors of the

pallet. The background transparent effect will be enabled when the background color index is set to 0xF.

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