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16-BIT TIMER 0/1 S3C8245/P8245/C8249/P8249
12-8
BLOCK DIAGRAM
Timer 1 Data H/L
Register
Timer 1 Buffer Reg
16-bit Comparator
16-bit Up-Counter
(Read Only)
Counter Clear Signal or Match
Clear
Match
T1CON.7-5
f
XX
/1024
f
XX
/8
f
XX
/256
f
XX
/64
f
XX
/1
T1OVF
IRQ3
T1CON.0
OVF Pending
T1CON.2
T1INT
IRQ3
Pending
T1CON.1
T1OUT
T1PWM
T1CON.4-.3
R
M
U
X
V
SS
T1CLK
M
U
X
M
U
X
T1CAP
T1CON.4-.3
Data Bus
8
Data Bus
8
Pending Pending bit is located at INTPND register
NOTES:
1. 16-bit PWM frequency. Where 10 MHz clock is used and fxx/8 is selected,
PWM frequency = 1 / { (8/10 MHz) x FFFFh } = 19.07 Hz
2. Timer 1 input clock must be slower than CPU clock.
Figure 12-6. Timer 1 Functional Block Diagram