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TMP320C2811PBKA датащи(PDF) 95 Page - Texas Instruments |
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TMP320C2811PBKA датащи(HTML) 95 Page - Texas Instruments |
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95 / 147 page ![]() Electrical Specifications 95 June 2004 SPRS257 XCLKIN/8 (XCLKIN * 5) th(XPLLDIS) th(XMP/MC) th(boot-mode)† tw(RSL2) XCLKIN X1 XRS XF/XPLLDIS XMP/MC Boot-Mode Pins XCLKOUT I/O Pins Address/Data/ Control Boot-ROM Execution Starts User-Code Execution Starts User-Code Dependent User-Code Dependent User-Code Execution Phase (Don’t Care) (Don’t Care) (Don’t Care) (Don’t Care) User-Code Dependent User-Code Execution Peripheral/GPIO Function User-Code Dependent GPIO Pins as Input (State Depends on Internal PU/PD) GPIO Pins as Input GPIOF14/XF XPLLDIS Sampling GPIOF14 Peripheral/GPIO Function † After reset, the Boot ROM code executes instructions for 1260 SYSCLKOUT cycles (SYSCLKOUT = XCLKIN/2) and then samples BOOT Mode pins. Based on the status of the Boot Mode pin, the boot code branches to destination memory or boot code function in ROM. The BOOT Mode pins should be held high/low for at least 2520 XCLKIN cycles from boot ROM execution time for proper selection of Boot modes. If Boot ROM code executes after power-on conditions (in debugger environment), the Boot code execution time is based on the current SYSCLKOUT speed. The SYSCLKOUT will be based on user environment and could be with or without PLL enabled. td(EX) tsu(XPLLDIS) Figure 6−8. Warm Reset in Microcomputer Mode |
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