t
d(WAKE-STBY)
t
d(IDLE-XCOH)
32 SYSCLKOUT Cycles
Wake-up
Signal
X1/XCLKIN
XCLKOUT
Flushing Pipeline
A
B
C
D
E
F
Device
Status
STANDBY Normal ExecutionSTANDBY
t
w(WAKE-INT)
TMS320F2810, TMS320F2811, TMS320F2812
TMS320C2810, TMS320C2811, TMS320C2812
SPRS174T –APRIL 2001–REVISED MAY 2012
www.ti.com
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 the number of cycles indicated below
before being turned off:
• 16 cycles, when DIVSEL = 00 or 01
• 32 cycles, when DIVSEL = 10
• 64 cycles, when DIVSEL = 11
This delay enables the CPU pipeline and any other pending operations to flush properly. If an access to XINTF is in
progress and its access time is longer than this number, then it will fail. It is recommended that STANDBY mode be
entered from SARAM without an XINTF access in progress.
C. Clocks to the peripherals are turned off. However, the PLL and watchdog are not shut down. The device is now in
STANDBY mode.
D. The external wake-up signal is driven active.
E. After a latency period, the STANDBY mode is exited.
F. Normal execution resumes. The device will respond to the interrupt (if enabled).
Figure 6-16. STANDBY Entry and Exit Timing
110 Electrical Specifications Copyright © 2001–2012, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812
To Next Page
Loading...
Need help?
General
