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Embedded PC/RTOS Features 49
.
When either of these fields are written (either by a single 32-bit write or separate
16-bit writes), the respective timer is loaded with the written value on the next
rising edge of the timer clock, regardless of whether the timer is enabled or
disabled. The value stored in this register is also automatically reloaded on
terminal count (or timeout) of the timer.
3.3.4 Timer 3 Load Count Register (TMRLCR3)
Timer 3 is 32-bits wide and obtains its load count from the Timer 3 Load Count
Register (TMRLCR3), located at offset 0x14 from the address in BAR2. The
mapping of bits in this register is shown in Table 3-6.
When this field is written, Timer 3 is loaded with the written value on the next
rising edge of the timer clock, regardless of whether the timer is enabled or
disabled. The value stored in this register is also automatically reloaded on
terminal count (or timeout) of the timer.
3.3.5 Timer 4 Load Count Register (TMRLCR4)
Timer 4 is 32-bits wide and obtains its load count from the Timer 4 Load Count
Register (TMRLCR4), located at offset 0x18 from the address in BAR2. The
mapping of bits in this register is shown in Table 3-7.
When this field is written, Timer 4 is loaded with the written value on the next
rising edge of the timer clock, regardless of whether the timer is enabled or
disabled. The value stored in this register is also automatically reloaded on
terminal count (or timeout) of the timer.
3.3.6 Timer 1 & 2 Current Count Register (TMRCCR12)
The current count of timers 1 & 2 may be read via the Timer 1 & 2 Current Count
Register (TMRCCR12), located at offset 0x20 from the address in BAR2. The
mapping of bits in this register is shown in Table 3-8.
Table 3-5 TMRLCR12 Bit Mapping
Field
Bits
Read or Write
Timer 2 Load Count
TMRLCR12[31..16]
R/W
Timer 1 Load Count
TMRLCR12[15..0]
R/W
Table 3-6 TMRLCR3 Bit Mapping
Field
Bits
Read or Write
Timer 3 Load Count
TMRLCR3[31..0]
R/W
Table 3-7 TMRLCR4 Bit Mapping
Field
Bits
Read or Write
Timer 4 Load Count
TMRLCR4[31..0]
R/W
Содержание V7768
Страница 13: ...Overview 13 Figure 2 Illustration of V7768 ...
Страница 15: ...Overview 15 Figure 4 Illustration of V7769 ...
Страница 28: ...28 V7768 V7769 Hardware Reference Manual Figure 1 4 Installing the PMC Card on the V7768 V7769 ...
Страница 29: ...Installation and Setup 29 Figure 1 5 Backside Mounting for the PMC Card Back ofV7768 SBC Solder Side ...