參數(shù)資料
型號： TMS320F2810PGFAEP
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)： 106/159頁
文件大小： 2084K
代理商： TMS320F2810PGFAEP
Electrical Specifications
106
March 2004 Revised October 2004
SGUS051A
Table 611. STANDBY Mode Switching Characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td(IDLE-XCOH)
Delay time, IDLE instruction
executed to XCLKOUT high
32 * tc(SCO)
12 * tc(CI)
Cycles
tw(WAKE-INT)
Pulse duration, external
wake-up signal
Without input qualifier
12 * tc(CI)
Cycles
With input qualifier
(2 + QUALSTDBY) * tc(CI)
Cycles
Delay time, external wake
signal to program execution
resume
Wake-up from Flash
Flash module in active state
Without input qualifier
12 * tc(CI)
Cycles
td(WAKE-STBY)
Wake-up from Flash
Flash module in active state
With input qualifier
12*tc(CI) + tw(WAKE-INT)
Cycles
Wake-up from Flash
Flash module in sleep state
Without input qualifier
1125 * tc(SCO)
Cycles
Wake-up from Flash
Flash module in sleep state
With input qualifier
1125 * tc(SCO) +
tw(WAKE-INT)
12 * tc(CI)
Cycles
Wake-up from SARAM
Wake-up from SARAM
Without input qualifier
With input qualifier
Cycles
Cycles
12 * tc(CI) + tw(WAKE-INT)
QUALSTDBY is a 6-bit field in the LPMCR0 register.
This is the time taken to begin execution of the instruction that immediately follows the IDLE instruction. Execution of an ISR (triggered by the
wake-up) signal involves additional latency.
tw(WAKE-INT)
td(WAKE-STBY)
td(IDLEXCOH)
32 SYSCLKOUT Cycles
Wakeup
Signal
X1/XCLKIN
XCLKOUT
STANDBY
Normal Execution
STANDBY
Flushing Pipeline
A
B
C
D
E
F
Device
Status
NOTES: A. IDLE instruction is executed to put the device into STANDBY mode.
B. The PLL block responds to the STANDBY signal. SYSCLKOUT is held for approximately 32 cycles before being turned
off. This 32cycle delay enables the CPU pipe and any other pending operations to flush properly.
C. The device is now in STANDBY mode.
D. The external wakeup signal is driven active (negative edge triggered shown as an example).
E. After a latency period, the STANDBY mode is exited.
F. Normal operation resumes. The device will respond to the interrupt (if enabled).
Figure 614. STANDBY Entry and Exit Timing
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