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List of Figures
1 Timer Block Diagram ....................................................................................................... 7
2 Generation of the Internal Timer Clock .................................................................................. 7
3 64-Bit Timer Mode Block Diagram........................................................................................ 8
4 Dual 32-Bit Timers Chained Mode Block Diagram ..................................................................... 9
5 Dual 32-Bit Timers Chained Mode Example........................................................................... 10
6 Dual 32-Bit Timers Unchained Mode Block Diagram................................................................. 10
7 Dual 32-Bit Timers Unchained Mode Example ........................................................................ 11
8 Timer Clock Source Block Diagram..................................................................................... 14
9 32-Bit Timer Counter Overflow Example ............................................................................... 17
10 Timer Initialization ......................................................................................................... 18
11 Timer in Watchdog Timer Mode ......................................................................................... 20
12 Watchdog Timer Operation State Diagram ............................................................................ 21
13 Emulation Management and Clock Speed Register (EMUMGT_CLKSPD) ....................................... 24
14 64-Bit Timer Counter Register........................................................................................... 25
15 Timer Counter Registers (CNTHI and CNTLO) ....................................................................... 25
16 64-Bit Timer Period Register............................................................................................. 26
17 Timer Period Registers (PRDHI and PRDLO)......................................................................... 26
18 Timer Control Register (TCR)............................................................................................ 27
19 Timer Global Control Register (TGCR)................................................................................. 30
20 Watchdog Timer Control Register (WDTCR) .......................................................................... 31
List of Tables
1 Counter and Period Registers Used in GP Timer Modes............................................................ 12
2 Timer Mode Selection..................................................................................................... 13
3 Timer Enabling............................................................................................................. 13
4 Timer Clock Source Selection ........................................................................................... 14
5 Timer Emulation Modes Selection ...................................................................................... 16
6 Timer Operation When Timer Count = 0 and Timer Period = 0..................................................... 16
7 Reading Counter Registers .............................................................................................. 17
8 Timer Registers............................................................................................................ 23
9 Emulation Management and Clock Speed Register (EMUMGT_CLKSPD) Field Descriptions................. 24
10 Timer Counter Registers (CNTHI and CNTLO) Field Descriptions ................................................. 25
11 Timer Period Registers (PRDHI and PRDLO) Field Descriptions................................................... 26
12 Timer Control Register (TCR) Field Descriptions ..................................................................... 27
13 Timer Global Control Register (TGCR) Field Descriptions........................................................... 30
14 Watchdog Timer Control Register (WDTCR) Field Descriptions.................................................... 31
15 TCI648x/C6472 Timer Revision History................................................................................ 32
4
List of Figures SPRU818B–December 2005–Revised September 2010
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