Toshiba TX39 Series User Manual page 205

32bit risc microprocessor
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TOSHIBA
IM-BUS
R E S E T S I G N A L
C L O C K S I G N A L
E X T E R N A L I N P U T
C L O C K S I G N A L
T I M E R C H A N N E L S 2 , 1 , A N D 0
R e g i s t e r
R / W C o n t r o l
L o g i c
C L O C K
D i v i d e r
C L O C K
S e l e c t
x1/2-
C o m p a r e
1/256
R e g i s t e r A
Interval Mode Reg.
Pulse Gen. Mode Reg.
Watchdog Mode Reg.
T i m e r C o n t r o l R e g i s t e r
I n t e r u p t C o n t r o l
R e g i s t e r
Fig. 13-2
PR39TMR Block Diagram
197
TMPR3904F Rev. 2.0
T i m e r R e a d
R e g i s t e r
C L E A R
2 4 - b i t C o u n t e r
C o m p a r e
R e g i s t e r B
C o m p a r e t o r ( = )
TMINTREQ*
TMFFOUT
I n t e r u p t
C o n t r o l L o g i c
WDTINTREQ*
S e l e c t o r
T I M E R I N T E R R U P T
R E Q U E S T S I G N A L
( I N T E R N A L I N T E R R U P T )
T I M E R O U T P U T S I G N A L
(E X T E R N A L O U T P U T )

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