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TMS320VC5502 Datasheet(PDF) 96 Page - Texas Instruments |
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TMS320VC5502 Datasheet(HTML) 96 Page - Texas Instruments |
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96 / 190 page  www.ti.com 3.13 External Bus Control Register TMS320VC5502 Fixed-Point Digital Signal Processor SPRS166J – APRIL 2001 – REVISED AUGUST 2006 The External Bus Control Register is used to disable/enable the bus pullups, pulldowns, and bus holders of the 5502 pins. Table 3-46 lists which 5502 pins have pullups, pulldowns, and bus holders, and which bit on the XBCR enables/disables that feature. Please note that for pins with dual functionality (e.g., HC0, HC1, C0, etc.), the bus holder, pullup, and pulldown feature of each pin can be enabled or disabled regardless of the function of the pin at the time. Table 3-46. Pins With Pullups, Pulldowns, and Bus Holders XBCR CONTROL BIT PIN FEATURE TCK Pullup TDI Pullup TEST TMS Pullup TRST Pulldown EMU1/OFF Pullup EMU EMU0 Pullup WDT NMI/WDTOUT Pullup HC0 Pullup HC1 Pulldown HCNTL0 Pullup HCNTL1 Pullup HCS Pullup HC HR/W Pullup HDS1 Pullup HDS2 Pullup HRDY Pullup HINT Pullup HD HD[7:0] Bus Holder C0 Bus Holder C1 Bus Holder C2 Bus Holder C3 Pullup C4 Bus Holder C5 Bus Holder C6 Bus Holder C7 Bus Holder PC C8 Bus Holder C9 Bus Holder C10 Bus Holder C11 Bus Holder C12 Bus Holder C13 Bus Holder C14 Pullup C15 Bus Holder PD D[31:0] Bus Holder PA A[21:2] Bus Holder Functional Overview 96 Submit Documentation Feedback |
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