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| 型号： | EVAL-ADUC7121QSPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 87/96页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADUC7121 |
| 设计资源： | ADUC7121 Gerber Files ADUC7121 Schematic |
| 标准包装： | 1 |
| 系列： | MicroConverter® ADuC7xxx |
| 类型： | MCU |
| 适用于相关产品： | ADUC7121 |
| 所含物品： | 板，CD |
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ADuC7121
Data Sheet
Rev. B | Page 88 of 96
Timer0 Load Registers
T0LD is a 16-bit register that holds the 16-bit value that is
loaded into the counter; available only in 16-bit mode.
Name:
T0LD
Address:
0xFFFF0300
Default value: 0x00
Access:
Read and write
Timer0 Clear Register
This 8-bit, write-only MMR is written (with any value) by user
code to refresh (reload) Timer0.
Name:
T0CLRI
Address:
0xFFFF0310
Default value: 0x00
Access:
Write only
TIMER1—GENERAL-PURPOSE TIMER
Timer1 is a 32-bit general-purpose timer, count down or count
up, with a programmable prescaler. The prescaler source can be
from the 32 kHz internal oscillator, the 32 kHz external crystal,
the core clock, or from the undivided PLL clock output. This
source can be scaled by a factor of 1, 16, 256, or 32,768. This gives
a minimum resolution of 22 ns when operating at CD zero, the
core is operating at 41.78 MHz, and with a prescaler of one.
The counter can be formatted as a standard 32-bit value or as
hours:minutes:seconds:hundredths.
Timer1 has a capture register (T1CAP) that can be triggered by
a source initial assertion of a selected IRQ. When triggered, the
current timer value is copied to T1CAP, and the timer keeps
running. This feature can be used to determine the assertion of
an event with increased accuracy. Timer1 interface consists of
five MMRs as shown in Table 127.
If the part is in a low power mode and Timer1 is clocked from
the GPIO or low power oscillator source, then Timer1
continues to operate.
Timer1 reloads the value from T1LD either when Timer1
overflows or immediately when T1ICLR is written.
Table 127. Timer1 Interface Registers
Register
Description
T1LD
32-bit register. Holds 32-bit unsigned integers. This
register is read only.
T1VAL
32-bit register. Holds 32-bit unsigned integers.
T1CAP
32-bit register; Holds 32-bit unsigned integers. This
register is read only.
T1CLRI
8-bit register. Writing any value to this register clears
the Timer1 interrupt.
T1CON
Configuration MMR.
Timer1 Load Registers
T1LD is a 32-bit register that holds the 32-bit value that is
loaded into the counter.
Name:
T1LD
Address:
0xFFFF0320
Default value: 0x00000000
Access:
Read and write
Timer1 Clear Register
This 8-bit, write-only MMR is written (with any value) by user
code to refresh (reload) Timer1.
Name:
T1CLRI
Address:
0xFFFF032C
Default value: 0x00
Access:
Write only
Timer1 Value Register
T1VAL is a 32-bit register that holds the current value of
Timer1.
Name:
T1VAL
Address:
0xFFFF0324
Default value: 0x00000000
Access:
Read only
Timer1 Capture Register
This is a 32-bit register that holds the 32-bit value captured by
an enabled IRQ event.
Name:
T1CAP
Address:
0xFFFF0330
Default value: 0x0000
Access:
Read only
Timer1 Control Register
This 32-bit MMR configures the mode of operation of Timer1.
Name:
T1CON
Address:
0xFFFF0328
Default value: 0x00000000
Access:
Read and write
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