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AM3517 Datasheet(PDF) 56 Page - Texas Instruments |
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AM3517 Datasheet(HTML) 56 Page - Texas Instruments |
56 / 184 page 2.4.8 System and Miscellaneous Terminals AM3517/05 ARM Microprocessor SPRS550 – OCTOBER 2009 www.ti.com Table 2-23. System and Miscellaneous Signals Description (ZCN Pkg.) SIGNAL NAME[1] DESCRIPTION[2] TYPE[3] BALL (ZCN Pkg.) [4] sys_32k 32-kHz clock input I K24 sys_xtalin Main input clock. Oscillator input or LVCMOS at 19.2, 13, or 12 MHz. I K25 sys_xtalout Output of oscillator O H25 sys_altclk Alternate clock source selectable for GPTIMERs (maximum 54 MHz), I L25 USB (48 MHz), or NTSC/PAL (54 MHz) sys_clkreq Request from device for system clock (open source type) IO M24 sys_clkout1 Configurable output clock1 O N25 sys_clkout2 Configurable output clock2 O M25 sys_boot0 Boot configuration mode bit 0 I Y4 sys_boot1 Boot configuration mode bit 1 I AA1 sys_boot2 Boot configuration mode bit 2 I AA2 sys_boot3 Boot configuration mode bit 3 I AA3 sys_boot4 Boot configuration mode bit 4 I AB1 sys_boot5 Boot configuration mode bit 5 I AB2 sys_boot6 Boot configuration mode bit 6 I AC1 sys_boot7 Boot configuration mode bit 7 I AC2 sys_boot8 Boot configuration mode bit 8 I AC3 sys_nrespwron Power On Reset I Y2 sys_nreswarm Warm Boot Reset (open drain output) IOD Y3 sys_nirq External FIQ input I Y1 sys_ndmareq0 External DMA request 0 (system expansion). Level (active low) or edge I M3 (falling) selectable. sys_ndmareq1 External DMA request 1 (system expansion). Level (active low) or edge I M2,U1 (falling) selectable. sys_ndmareq2 External DMA request 2 (system expansion). Level (active low) or edge I F1,M1 (falling) selectable. sys_ndmareq3 External DMA request 3 (system expansion). Level (active low) or edge I G6,N5 (falling) selectable. TERMINAL DESCRIPTION 56 Submit Documentation Feedback |
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