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TMP92CZ26A has two PLL circuits: one is for CPU (PLL0) and the other for USB (PLL1).
Each PLL can be controlled independently. Frequency of external oscillator is 6 to 10MHz.
Don't connect oscillator more than10MHz. When clock is input by using external oscillator,
range of input frequency is 6 to10MHz. Don't input the clock over 10MHz.
(a) PLL, USB (PLL0 ON/PLL1ON)
(b) PLL, No USB (PLL0 ON/PLL1OFF)
(c) No PLL, No USB (PLL0 OFF/PLL1OFF)
Note: When using USB, set high-frequency oscillator to 10.0 MHz.
Table 3.3.1 Setting example for f
High frequency:
f
OSCH
10.0 MHz
Max 10.0 MHz
Max 10.0 MHz
92CZ26A-23
OSCH
System
System
clock:
clock:
f
f
SYS
SYS
Max 80 MHz
Max 60 MHz
Max 80 MHz
Max 60 MHz
Max 10 MHz
Max 10 MHz
TMP92CZ26A
USB
clock:
f
USB
48 MHz
−
−
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