ST92195C/D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST92195C/D

48-96 Kbyte ROM HCMOS MCU WITH ON-SCREEN DISPLAY AND TELETEXT DATA SLICER

STMicroelectronics 

ST92195C/D - TIMING AND CLOCK CONTROLLER

Figure 33. Programming the MCCR

Set the PLL frequency

FML (3:0)

Start the PLL by setting

FMEN = 1

Wait for Clock

Stabilization

Example:

spp

#27h ;Set the page

ld MCCR, #04h ;Set FML bits to the value needed e.g. 10 MHz

or MCCR, #80h ;Starts the PLL

Wait for stabilization time

or MCCR, #40h ;Validate the PLL as the main CPU Clock

Validate PLL as Main

CPU Clock

Figure 34. Programming the SKCCR, PXCCR

Set the PLL frequency

SKW (3:0)

Start the PLL by setting

SKWEN = 1

Wait for Clock

Stabilization

Example:

spp

#27h ;Set the page

ld SKCCR, #04h ;Set SKW bits to the value needed

or SKCCR, #80h ;Starts the PLL

Wait for stabilization time

or PXCCR, #80h ;PLL is fed as DOTCK to the TDSRAM & OSDPLL

Validate PLL is fed to

TDSRAM and OSD

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