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ST72681 Datasheet(PDF) 5 Page - STMicroelectronics |
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ST72681 Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 12 page ST72681 5/12 PIN DESCRIPTION (Cont’d) Table 3. USB 2.0 Interface Table 4. USB 2.0 and core Clock System Pin Pin Name Description 12 VDDBL S Supply voltage for buffers and deserialisation flip flops (1.8V) 11 VSSBL S Ground for buffers and deserialisation flip flops (1.8V) 10 USBDM I/O USB2 DATA - 9 USBDP I/O USB2 DATA + 8 VDD3 S Supply voltage for the FS compliance (3.3V) 7 VDDC S Supply voltage for DLL & xor tree (1.8V) 6 VSSC S Ground for DLL & XOR tree (1.8V) 5 RREF I/O Ref. resistor for integrated impedance process adaptation (11.3 kOhms 1% Pull Down) Pin Pin Name Description 4 VSSA S Ground for osc & PLL (1.8V) 3 OSCOUT O 12MHz oscillator output 2 OSCIN I 12MHz oscillator input 1 VDDA S Supply voltage for osc & PLL (1.8V) |
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