Timers
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
18-4 Freescale Semiconductor
Table18-1 describes TGCR1 fields.The TGCR2 register is shown in Figure18-4.
01234567
Field CAS2 STP2 RST2 GM1 STP1 RST1
Reset 0000_0000
R/W R/W
Addr 0x0x10D80

Figure 18-3. Timer Global Configuration Register 1 (TGCR1)

Table18-1. TGCR1 Field Descriptions

Bits Name Description
0CAS2 Cascade timers.
0Nor mal operation.
1Timers 1 and 2 cascade to form a 32-bit timer.
1 Reserved, should be cleared.
2STP 2 Stop timer.
0Nor mal operation.
1Reduce power consumption of the timer. This bit stops all clocks to the timer, except the clock
from the internal bus interface, which allows the user to read and write timer registers. The clocks
to the timer remain stopped until the user clears this bit or a hardware reset occurs.
3RST2 Reset timer.
0Reset the corresponding timer (a software reset is identical to an external reset).
1Enable the corresponding timer if the STP bit is cleared.
4GM1 Gate mode for TGATE1. This bit is valid only if the gate function is enabled in TMR1 or TMR2.
0 Restart gate mode. TGATE1 is used to enable/disable count. A falling TGATE1 enables and
restarts the count and a rising edge of TGATE1 disables the count.
1Nor mal gate mode. This mode is the same as 0, except the falling edge of TGATE1 does not
restart the count value in TCN.
5 Reserved, should be cleared.
6STP1 Stop timer.
0Nor mal operation.
1Reduce power consumption of the timer. This bit stops all clocks to the timer, except the clock
from the internal bus interface, which allows the user to read and write timer registers. The clocks
to the timer remain stopped until the user clears this bit or a hardware reset occurs.
7RST1 Reset timer.
0Reset the corresponding timer (a software reset is identical to an external reset).
1Enable the corresponding timer if STP = 0.