tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 32

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

2.3
System clock controller
RA000
2.3
2.3.1
2.3.2
System clock controller
XTOUT
XOUT
XTIN
and an operation mode control circuit. The TMP89FM82T also has the clock frequency multiplier circuit (PLL)
to generate a clock of programmable motor driver (PMD).
(SYSCR2), the warm-up counter control register (WUCCR), the warm-up counter data register (WUCDR) and
the clock gear control register (CGCR). The clock multiplier that genarates a clock to PMD is controlled by
system control register0 (PLLCR0) and system control register1 (PLLCR1) .
XIN
Configuration
Control
The system clock controller consists of a clock generator, a clock gear, a timing generator, a warm-up counter
The system clock controller is controlled by system control register 1 (SYSCR1), system control register 2
Low-frequency clock
oscillation circuit
clock oscillation
High-frequency
generator
circuit
Clock
Figure 2-3 System Clock Controller
fc
fs
Oscillation/stop control
(×1/4, ×1/2, ×1)
Clock for programmable moter driver
clock gear
CGCR
(× 3)
PLL
WUCCR
FCGCKSEL
Page 16
Warm-up counter
PLLCR0, PLLCR1
1/4
fcgck
WUCDR
fpll
STOP
fx
XEN/XTEN
TBTCR
fcgck
INTWUC interrupt request
System clock
generator
Timing
DV9CK
fm
System control register
SYSCR1
Operation mode
TMP89FM82T
control circuit
SYSCR2