W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 42

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

Figure 5.14.2.1 Block diagram of timer channel 1
Note:
5.14.3 Features
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5.14.4 Operation Modes
The following figures show some typical timing diagrams of TIMER write cycles
Figure 5.14.4.1 Timer register write command when the oscillator frequency is faster
than the CPU frequency.
W90221X version 0.6
The above block diagram is timer channel 1. Block diagrams of these two
timer channels are the same.
Two 24-bit decrement timer channels with individual interrupt requests
Programmable timer clocks for each channels, the clock range is OSC ~ OSC/8'hFF
Maximum uninterrupted time or timeout = 5 minutes (if OSC = 14.318MHz)
Typical OSC frequency is 14.318MHz.
WR_EN_CNT
WR_EN_pp
WR_EN_p
WR_EN
TCLK
GEN1
ADS_
GEN2
OSC
CONTROL FROM CPU
TO Interrupt module
TICR1_CNT=24h 0
TICR1
TCR1
TICR1_CNT
TCR1_CNT
TCR1_CNT=8h0
-1
-1
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