MC141543 데이터 시트보기 (PDF) - Motorola => Freescale

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MC141543

Advanced Monitor On-Screen Display

Motorola => Freescale 

Bit 1 CCS1 — This additional color select bit provides the

characters residing within Window 3 with two extra color

selections, making a total of four selections for that row.

Bit 0 PWMCK_EN — When this bit is set to 1, the HTONE/

PWMCK pin will be switched to a clock output which is syn-

chronous to the H sync and used as an external PWM (pulse

width modulation) clock source. Refer to the pin description

of HTONE/PWMCK for more information. After power–on,

the default value is 0.

Row 15 Coln 8

76

54

ÎÎÎÎÎÎÎÎÎÎÎÎÎ ROW 15

COL END ADDR

ÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN8 MSB

32

LSB R

10

GB

Bit 2–0 R, G and B — These bits control the color of Win-

dow 3. Window 1 occupies Columns 0–2 of Row 15; Window

2 occupies Columns 3–5; and Window 3 occupies 6–8. Win-

dow 1 has the highest priority, and Window 3 the least. If win-

dow overlapping occurs, the higher priority window will cover

the lower one, and the higher priority color will take over on

the overlap window area. If the start address is greater than

the end address, this window will not be displayed.

Frame Control Registers

Frame Control Register Row 15 Coln 9

76

ÎÎÎÎÎÎÎÎÎÎÎÎ COLN 9

ÎÎÎÎÎÎÎÎÎÎÎÎ MSB

5432

VERTD

10

LSB

Bit 7–0 VERTD — These eight bits define the vertical start-

ing position. There are a total of 256 steps, with an increment

of four horizontal lines per step for each field. The value can-

not be zero anytime, and the default value is 4.

Frame Control Register Row 15 Coln 10

COLN1ÎÎÎ0 ÎÎÎ7 ÎÎÎMS6BÎÎÎÎÎÎ5 ÎÎÎ4HÎÎÎORDÎÎÎ3 ÎÎÎ2ÎÎÎÎÎÎ1 ÎÎÎLS0BÎÎÎ

Bit 6–0 HORD — These bits define the horizontal starting

position for character display. Seven bits give a total of 128

steps and each increment represents a five–dot shift to the

right on the monitor screen. The value cannot be zero any-

time, the default value is 15.

Frame Control Register Row 15 Coln 11

7 65 43 2 1 0

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN 11

CH5 CH4 CH3 CH2 CH1 CH0

Bit 5–0 CH5–CH0 — These six bits determine the dis-

played character height. It is possible to have a proper char-

acter height by setting a value greater than or equal to 16 on

a different horizontal frequency monitor. Setting a value be-

low 16 will not have a predictable result. Figure 6 illustrates

how this chip expands the built–in character font to the de-

sired height.

Frame Control Register Row 15 Coln 12

76

5

4 3 21 0

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ COLN12 OSD_EN BSEN SHADOW X64 X32B

FBKGC

Bit 7 OSD_EN — The OSD circuit is activated when this bit

is set.

Bit 6 BSEN — This bit enables the character bordering or

shadowing function when it is set.

Bit 5 SHADOW — Characters with black–edge shadowing

are selected if this bit is set; otherwise bordering prevails.

Bit 4 X64, Bit 3 X32B — This bit determines the number of

dots per horizontal line. There are 320 dots per horizontal

line if Bit X32B is clear, which is also the default power–on

state. Otherwise, 480 dots per horizontal sync line is chosen

when Bit X64 is clear, and 640 dots per horizontal sync line

when Bit X64 is set to 1. Refer to Table 2 for details.

Bit 0 FBKGC — Bit 0 determines the configuration of the

FBKG output pin. When it is clear, the FBKG pin outputs high

while displaying characters or windows; otherwise, the

FBKG pin outputs high only while displaying characters.

Table 2. Resolution Setting

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ (X64, X32B)

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Dots / Line

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Resolution

(0,0)

320

CGA

(1,0)

320

CGA

(0,1)

480

EGA

(1,1)

640

VGA

0

1

ÎÎÎÎÎ 2

3

ÎÎÎÎÎ 4

5

ÎÎÎÎÎ 6

7

8

16 lines

ÎÎÎÎÎ 9

10

ÎÎÎÎÎ 11

12

13

ÎÎÎÎÎ 14

ÎÎÎÎÎ 15

Built–in font

(10x16 matrix)

when CH=16

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ25 lines

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Display character

when CH=25

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 22lines

Display character

when CH=22

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 34lines

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Display character

when CH=34

Figure 6. Variable Character Height

An IBM PC program called “AMOSD Font Editor” was writ-

ten for MC141543 editing purposes. This program generates

a set of S–Record or Binary record for the desired display

patterns to be masked onto the character ROM of the

MC141543.

MC141543

8

MOTOROLA

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