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ENICSF2811PBKA 数据表(PDF) 111 Page - Texas Instruments |
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ENICSF2811PBKA 数据表(HTML) 111 Page - Texas Instruments |
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111 / 172 page  t d(IDLE-XCOH) 32 SYSCLKOUT Cycles X1/XCLKIN XCLKOUT (H) Wake-up Latency Flushing Pipeline t d(wake) A B C D Device Status E G F PLL Lock-up Time XNMI Normal Execution HALT HALT t w(WAKE-XNMI) t p Oscillator Start-up Time TMS320F2810, TMS320F2811, TMS320F2812 TMS320C2810, TMS320C2811, TMS320C2812 www.ti.com SPRS174T – APRIL 2001 – REVISED MAY 2012 Table 6-16. HALT Mode Timing Requirements MIN NOM MAX UNIT tw(WAKE-XNMI) Pulse duration, XNMI wakeup signal 2tc(CI) cycles tw(WAKE-XRS) Pulse duration, XRS wakeup signal 8tc(CI) cycles Table 6-17. HALT Mode Switching Characteristics PARAMETER MIN TYP MAX UNIT td(IDLE-XCOH) Delay time, IDLE instruction executed to XCLKOUT high 32tc(SCO) 45tc(SCO) cycles tp PLL lock-up time 131072tc(CI) cycles Delay time, PLL lock to program execution resume • Wake up from flash 1125tc(SCO) cycles td(WAKE) – Flash module in sleep state 35tc(SCO) cycles • Wake up from SARAM A. IDLE instruction is executed to put the device into HALT mode. B. The PLL block responds to the HALT signal. SYSCLKOUT is held for another 32 cycles before the oscillator is turned off and the CLKIN to the core is stopped. This 32-cycle delay enables the CPU pipe and any other pending operations to flush properly. C. Clocks to the peripherals are turned off and the internal oscillator and PLL are shut down. The device is now in HALT mode and consumes absolute minimum power. D. When XNMI is driven active, the oscillator is turned on; but the PLL is not activated. The pulse duration of 2tc(CI) is applicable when an external oscillator is used. If the internal oscillator is used, the oscillator wake-up time should be added to this parameter. E. When XNMI is deactivated, it initiates the PLL lock sequence, which takes 131,072 X1/XCLKIN cycles. F. When CLKIN to the core is enabled, the device will respond to the interrupt (if enabled), after a latency. The HALT mode is now exited. G. Normal operation resumes. H. XCLKOUT = SYSCLKOUT Figure 6-17. HALT Wakeup Using XNMI Copyright © 2001–2012, Texas Instruments Incorporated Electrical Specifications 111 Submit Documentation Feedback Product Folder Link(s): TMS320F2810 TMS320F2811 TMS320F2812 TMS320C2810 TMS320C2811 TMS320C2812 |
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