ST92185B datasheet(86/178 Pages) STMICROELECTRONICS

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ST92185B 数据表(PDF) 86 Page - STMicroelectronics

部件名	ST92185B

功能描述	16K/24K/32K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY

PDF	178 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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86 / 178 page

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ST92185B - DISPLAY STORAGE RAM INTERFACE

TDSRAM (Cont’d)

7.3.3 Initialisation

7.3.3.1 Clock Initialisation

Before initialising the TRI, first initialise the pixel

clock. Refer to the Application Examples in the

OSD chapter and to the RCCU chapter for a de-

scription of the clock control registers.

7.3.3.2 TRI Initialisation

It is recommended to wait for a stable clock issued

from the Pixel frequency multiplier before enabling

the TDSRAM interface.

Use the CONFIG register to initialise and start

the TRI. Note: The DON bit can only be changed

while GEN=0

Example:

spp #0x26

ld config, #0x02 ; DON,GEN=0

or config, #0x01 ; set GEN=1

During and after a reset, the TDSRAM interface is

forced into its "disable" mode where the sequencer

is forced into its idle state.

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