STV9937 datasheet(11/49 Pages) STMICROELECTRONICS

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STV9937

C[4:0]: Column Number

There are 32 possible columns.

00000: 1 column

11111: 32 columns

2.1.5

Control Data, Color Codes or Character Codes

Color codes are stored on 3 bits. Control data is stored on 8 bits and Character codes are stored on

9 bits.

2.1.6

Configuration of Transmission Formats

All formats must start with the S, FWR and FAC bytes.

2.2

Format Changing

To change from Format A to Format B

S-FWR[0]- FAC[0]-D[0]

® FWR[1]- FAC[1]- D[1] ® FWR[2]- FAC[2]- D[2] ® FAC[3]- D[3] ® FAC[4]-

D[4]

® FAC[5]- D[5]...

The F bit from the FAC byte is always 0 in this case.

To change from Format A to Format C

S - FWR[0]- FAC[0]- D[0]

® FWR[1]- FAC[1]- D[1] ® FWR[2]- FAC[2]- D[2] ® D[3] ® D[4] ® D[5]...

The “F” bit from the FAC byte is as follows:

F[0] = F[1] = “0”

F[2] = “1”

To change from Format B to Format A

S - FWR[0]- FAC[0]-D[0]

® FAC[1]- D[1] ® FAC[2]-D[2] ® FWR[3]- FAC[3]- D[3] ® FWR[4]- FAC[4]-

D[4]...

The F bit from the FAC byte is always 0 in this case.

Table 3: Configuration of Transmission Formats

Byte

Format

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Address bytes

for Characters

Codes

Windows & Rows

FWR

A, B or C

W[2:0]

R[3:0]

Column (A and B)

FAC

A or B

C[4:0]

Column (C)

FAC

C[4:0]

Address bytes

for Color Codes

Windows & Rows

FWR

A, B or C

W[2:0]

R[3:0]

Column (A and B)

FAC

A or B

C[4:0]

Column (C)

FAC

C[4:0]

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