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MCF5483 Datasheet(PDF) 10 Page - Freescale Semiconductor, Inc |
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MCF5483 Datasheet(HTML) 10 Page - Freescale Semiconductor, Inc |
10 / 34 page MCF548x ColdFire® Microprocessor, Rev. 4 Output Driver Capability and Loading Freescale Semiconductor 10 4.4.1 Bias Resistor The USBRBIAS resistor should be placed as close to the dedicated USB 2.0 pins as possible. The tolerance should be ±1%. Figure 7. USBRBIAS Connection 5 Output Driver Capability and Loading Table 6 lists values for drive capability and output loading. Table 6. I/O Driver Capability1 1 The device’s pads have balanced sink and source current. The drive capability is the same as the sink capability. Signal Drive Capability Output Load (CL) SDRAMC (SDADDR[12:0], SDDATA[31:0], RAS, CAS, SDDM[3:0], SDWE, SDBA[1:0] 24 mA 15 pF SDRAMC DQS and clocks (SDDQS[3:0], SDRDQS, SDCLK[1:0], SDCLK[1:0], SDCKE) 24 mA 15 pF SDRAMC chip selects (SDCS[3:0]) 24 mA 15 pF FlexBus (AD[31:0], FBCS[5:0], ALE, R/W, BE/BWE[3:0], OE) 16 mA 30 pF FEC (EnMDIO, EnMDC, EnTXEN, EnTXD[3:0], EnTXER 8 mA 15 pF Timer (TOUT[3:0]) 8 mA 50 pF FlexCAN (CANTX) 8 mA 30 pF DACK[1:0] 8 mA 30 pF PSC (PSCnTXD[3:0], PSCnRTS/PSCnFSYNC, 8 mA 30 pF DSPI (DSPISOUT, DSPICS0/SS, DSPICS[2:3], DSPICS5/PCSS) 24 mA 50 pF PCI (PCIAD[31:0], PCIBG[4:1], PCIBG0/PCIREQOUT, PCIDEVSEL, PCICXBE[3:0], PCIFRM, PCIPERR, PCIRESET, PCISERR, PCISTOP, PCIPAR, PCITRDY, PCIIRDY 16 mA 50 pF I2C (SCL, SDA) 8 mA 50 pF BDM (PSTCLK, PSTDDATA[7:0], DSO/TDO, 8 mA 25 pF RSTO 8 mA 50 pF 9.1k Ω USBRBIAS |
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