TMP92CZ26A

92CZ26A-22

3.3.1 Block diagram of system clock

Clock gear
SYSCR0<PRCK>
fs
fOSCH
Low frequency
Oscillator circuit
XT1
XT2
SYSCR0<XTEN >
Warming up timer
(High/Low frequency oscillator circuit)
SYSCR0<WUEF>
SYSCR2<WUPTM1:0>
X1
X2
÷2÷16÷4
fc/16
fc/8
fc/4
fc/2
fc
PLLCR0<FCSEL>
SYSCR1<GEAR2:0>
÷2
fSYS
÷2φT0TM
R
fs
φT0
High frequency
Oscillator circuit
÷8
÷2 fIO
Lock up timer
(PLL)
PLLCR1<PLLON>,
PLLCR0<LUPFG>
÷8
Clock Doubler1
(PLL1)× 24 fUSB
SYSCR0<USBCLK1:0>
÷5fPLLUSB
X1USB
TMRA0:7,TMRB0:1
fSYS CPU
RAM
Interrupt
Controller
I/O ports
Prescaler
φT0TMR
SIO0
RTC
fs
Prescaler
MLD/ALM
SDRAMC
fio
LCDC
Memory
Controlle
r
NAND-Flash
Controlle
r
I2S
TSI
SPIC
SBI
Prescaler DMAC
MAC
fUSB USB
ADC
÷2
fPLL
Clock Doubler0
(PLL0)
×
(
12 or16
)
fOSCH4
÷4
φT0

Figure 3.3.2 Block Diagram of System clock