SPRS698H November 2010 – March 2020 TMS320F28062 , TMS320F28062F , TMS320F28063 , TMS320F28064 , TMS320F28065 , TMS320F28066 , TMS320F28067 , TMS320F28068F , TMS320F28068M , TMS320F28069 , TMS320F28069F , TMS320F28069M
|tw(RSL1)||Pulse duration, XRS driven by device||600||μs|
|tw(WDRS)||Pulse duration, reset pulse generated by watchdog||512tc(OSCCLK)||cycles|
|td(EX)||Delay time, address/data valid after XRS high||32tc(OSCCLK)||cycles|
|tINTOSCST||Start-up time, internal zero-pin oscillator||3||μs|
|tOSCST(1)||On-chip crystal-oscillator start-up time||1||10||ms|
Figure 5-7 shows an example for the effect of writing into PLLCR register. In the first phase, PLLCR = 0x0004 and SYSCLKOUT = OSCCLK × 2. The PLLCR is then written with 0x0008. Right after the PLLCR register is written, the PLL lock-up phase begins. During this phase, SYSCLKOUT = OSCCLK/2. After the PLL lock-up is complete, SYSCLKOUT reflects the new operating frequency, OSCCLK × 4.