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MTV021 Revision 5.0 6/29/1999

MTV021

MYSON

TECHNOLOGY

= (1, 1)

⇒

76MHz < Pixel rate < 96MHz

where Pixel rate = VCLK Freq = HFLB Freq * HORR * 12

The initial value is (0, 0) after power up.

Notes :

1. That is, if HORR is specified and RP resister = 12K ohm, then (VCO1, VCO0)

= (0, 0) if

6000/(HORR * 12) < HFLB Freq (KHz) < 12000/(HORR * 12)

= (0, 1) if 12000/(HORR * 12) < HFLB Freq (KHZ) < 24000/(HORR * 12)

= (1, 0) if 24000/(HORR * 12) < HFLB Freq (KHZ) < 48000/(HORR * 12)

= (1, 1) if 48000/(HORR * 12) < HFLB Freq (KHZ) < 96000/(HORR * 12)

2. It is necessary to wait for the PLL to become stable while (i) the HORR register is changed; (ii) the (VCO1, VCO0)

bits is changed; (iii) the horizontal signal (HFLB) is changed.

3. When PLL is unstable, don't write data in any address except Column 15,17,18 of Row 15. If data is written in any

other address, a malfunction may occur.

WSR, WSG, WSB - Define the color of shadowing on windows. The initial value is (0, 0, 0) after power up.

CSR, CSG, CSB - Define the color of bordering or shadowing on characters. The initial value is (0, 0, 0) after

power up.

CFONT - Enable 16 multi-color fonts.

= 0

⇒ Character address 240 to 255 are connected to standard ROM fonts.

= 1

⇒ Character address 240 to 255 are connected to 16 multi-color ROM fonts.

The initial value is 0 after power up.

WW41, WW40 - Determines the shadow width of the window 4 when WSHD bit of th window 4 is enabled.

Please refer to the Table 6 for more details.

TABLE 6. Shadow Width Setting

TABLE 5. PWMCK Frequency and PWMDA sampling rate

(VCO1, VCO0)

PWMCK Freq (6M ~ 12MHz)

PWMDA sampling rate (23K ~ 47KHz)

( 0, 0 )

HFLB Freq * HORR * 12

HFLB Freq * HORR * 12 / 256

( 0, 1 )

HFLB Freq * HORR * 6

HFLB Freq * HORR * 6 / 256

( 1, 0 )

HFLB Freq * HORR * 3

HFLB Freq * HORR * 3 / 256

( 1 ,1 )

HFLB Freq * HORR * 3 / 2

HFLB Freq * HORR * 3 / 512

Column 19

B7

b6

b5

b4

b3

b2

b1

b0

-

WSR

WSG

WSB

-

CSR

CSG

CSB

Column 20

B7

b6

b5

b4

b3

b2

b1

b0

-

-

-

-

-

-

-

CFONT

Column 21

B7

b6

b5

b4

b3

b2

b1

b0

WW41

WW40

WW31

WW30

WW21

WW20

WW11

WW10

(WW41, WW40)

(0, 0)

(0, 1)

(1, 0)

(1, 1)

Shadow Width

(unit in Pixel)

2

4

6

8