ST92196A STMicroelectronics, ST92196A Datasheet - Page 68

• Manufacturer Part Number: ST92196A
• Description: 8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
• Manufacturer: STMicroelectronics

FREQUENCY MULTIPLIERS (Cont’d)
Off-chip filter components (to be confirmed)
– Core frequency multiplier (FCPU pin) : 1.2K
– Skew frequency multiplier (FOSD pin) : 1.2K
The frequency multipliers are off during and upon
exiting from the reset phase. The user must pro-
gram the desired multiplying factor, start the multi-
plier and then wait for its stability (refer to the Elec-
trical Characteristics chapter for the specified de-
lay).
Once the Core/Peripherals multiplier is stabilized,
the Main Clock controller can be re-programmed
through the FMSL bit in the MCCR register to pro-
vide the final frequency (CPUCLK) to the CPU.
The
switched off when the microprocessor enters
HALT mode (the HALT mode forces the control
register to its reset status).
ohms; 47 nF plus 100 pF between the FCPU pin
and GND.
ohms; 47 nF plus 100 pF between the FOSD pin
and GND.
frequency
multipliers
are
automatically
TIMING AND CLOCK CONTROLLER (TCC)
Table 14. Examples of CPU Speed Choices
Note: 24 MHz is the max. authorized frequency.
Caution: The values indicated in this table are the only
authorized values.
Table 15. PIXCLK Frequency Choices
Crystal Frequency
Crystal Frequency
SKDIV2=0
SKDIV2=0
4 MHz
4 MHz
SKW
(3:0)
FML
(3:0)
10
11
6
7
8
9
6
7
8
9
10
11
4
5
6
7
8
9
FPIXC
0
0
0
0
0
0
1
1
1
1
CPUCLK
10 MHz
12 MHz
14 MHz
16 MHz
18 MHz
20 MHz
22 MHz
24 MHz
PIXCLK
14 MHz
16 MHz
18 MHz
20 MHz
22 MHz
24 MHz
28 MHz
32 MHz
36 MHz
40 MHz
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