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TMS320DM643 датащи(PDF) 57 Page - Texas Instruments |
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TMS320DM643 датащи(HTML) 57 Page - Texas Instruments |
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57 / 160 page ![]() www.ti.com TMS320DM643 Video/Imaging Fixed-Point Digital Signal Processor SPRS269A – FEBRUARY 2005 – REVISED APRIL 2005 Table 3-8. DM643 Device Multiplexed Pin Configurations MULTIPLEXED PINS DEFAULT DEFAULT DESCRIPTION FUNCTION SETTING NAME NO. CLKOUT4/GP0[1] D6 CLKOUT4 GP1EN = 0 (disabled) These pins are software-configurable. To use these pins as GPIO pins, the GPxEN bits in the GPIO Enable Register and the GPxDIR bits in the GPIO Direction Register must be properly configured. CLKOUT6/GP0[2] C6 CLKOUT6 GP2EN = 0 (disabled) GPxEN = 1: GPx pin enabled GPxDIR = 0: GPx pin is an input GPxDIR = 1: GPx pin is an output The VDAC output pin function is default. To use GP0[8] as a GPIO pin, the GPxEN bits in the GPIO Enable Register and the GPxDIR bits in the GPIO Direc- GP8EN = 0 (disabled) VDAC/GP0[8] AD1 None tion Register must be properly configured. MAC_EN = 0 (disabled) GP8EN = 1: GP8 pin enabled GP8DIR = 0: GP8 pin is an input GP8DIR = 1: GP8 pin is an output VP1D[19]/AXR0[7] AB12 VP1D[18]/AXR0[6] AB11 By default, no function is enabled upon reset. VP1D[17]/AXR0[5] AC11 To enable the Video Port 1 data pins, the VP1EN bit in the VP1EN bit = 0 (disabled) PERCFG register must be set to a 1. (McASP0 data pins VP1D[16]/AXR0[4] AD11 None MCASP0EN bit = 0 are disabled). VP1D[15]/AXR0[3] AE11 (disabled) To enable the McASP0[7:0] data pins, the MCASP0EN bit VP1D[14]/AXR0[2] AC10 in the PERCFG register must be set to a 1. (VP1 upper VP1D[13]/AXR0[1] AD10 data pins are disabled). VP1D[12]/AXR0[0] AC9 HD31/MRCLK G1 HD31 HD30/MCRS H3 HD30 HD29/MRXER G2 HD29 HD28/MRXDV J4 HD28 HD27/MRXD3 H2 HD27 HD26/MRXD2 J3 HD26 HD25/MRXD1 J1 HD25 To enable the EMAC peripheral, an external pullup resistor HD24/MRXD0 K4 HD24 MAC_EN = 0 (disabled) (1 k Ω) must be provided on the MAC_EN pin (setting MAC_EN = 1 at reset). HD22/MTCLK L4 HD22 HD21/MCOL K2 HD21 HD20/MTXEN L3 HD20 HD19/MTXD3 L2 HD19 HD18/MTXD2 M4 HD18 HD17/MTXD1 M2 HD17 HD16/MTXD0 M3 HD16 Device Configurations 57 |
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