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參數(shù)資料
| 型號： | TMP320F2810PGFA |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DIGITAL SIGNAL PROCESSORS |
| 中文描述： | 數(shù)字信號處理器 |
| 文件頁數(shù)： | 54/103頁 |
| 文件大小： | 1341K |
| 代理商： | TMP320F2810PGFA |
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TMS320F2810, TMS320F2812
DIGITAL SIGNAL PROCESSORS
SPRS174B
–
APRIL 2001
–
REVISED SEPTEMBER 2001
54
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
–
1443
low-power modes block
The low-power modes on the F2810 and F2812 are similar to the 240x devices. Table 40 summarizes the
various modes.
Table 40. F2810 and F2812 Low-Power Modes
MODE
IDLES
LPM(1:0)
OSCCLK
CLKIN
SYSCLKOUT
EXIT
Normal
low
X,X
on
on
on
on
–
IDLE
high
0,0
on
on
XRS,
WDINT,
Any Enabled Interrupt,
XNMI
STANDBY
high
0,1
on
(watchdog still
running)
off
off
XRS,
WDINT,
XINT1
,
XNMI
,
T1/2/3/4CTRIP
,
C1/2/3/4/5/6TRIP
,
SCIRXDA,
SCIRXDB,
CANRX,
Debugger
§
HALT
high
1,X
off
(oscillator and
PLL turned
off, watchdog
not functional)
off
off
XRS,
XNMI
,
Debugger
§
The Exit column lists which signals or under what conditions the low power mode will be exited. A low signal, on any of the signals, will exit the
low power condition. This signal must be kept low long enough for an interrupt to be recognized by the device. Otherwise the IDLE mode will
not be exited and the device will go back into the indicated low power mode.
The IDLE mode on the C28x behaves differently than on the 24x/240x. On the C28x, the clock output from the core (SYSCLKOUT) is still
functional while on the 24x/240x the clock is turned off.
§
On the C28x, the JTAG port can still function even if the core clock (CLKIN) is turned off.
The various low-power modes operate as follows:
IDLE Mode:
This mode is, exited by any enabled interrupt or an NMI that is recognized
by the processor. The LPM block performs no tasks during this mode as
long as the LPMCR(LPM) bits are set to 0,0.
Only the XRS and XNMI external signals can wake the device from HALT
mode. The XNMI input to the core has an enable/disable bit. Hence, it is
safe to use the XNMI signal for this function.
All other signals (including XNMI) will wake the device from STANDBY
mode if selected by the LPMCR1 register. The user will need to select
which signal(s) will wake the device. The selected signal(s) are also
qualified by the OSCCLK before waking the device. The number of
OSCCLKs is specified in the LPMCR0 register.
HALT Mode:
STANDBY Mode:
P
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