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SMJ320C6713BGNZA20EP Datasheet(PDF) 36 Page - Texas Instruments |
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SMJ320C6713BGNZA20EP Datasheet(HTML) 36 Page - Texas Instruments |
36 / 131 page SM320C6713-EP SM320C6713B-EP SGUS049I – AUGUST 2003 – REVISED SEPTEMBER 2009 www.ti.com 5.2 Peripheral Pin Selection at Device Reset Some C6713/13B peripherals share the same pins (internally MUXed) and are mutually exclusive (that is, HPI, general-purpose input/output pins GP[15:8, 3, 1, 0], and McASP1). • HPI, McASP1, and GPIO peripherals The HPI_EN (HD14 pin) is latched at reset. This pin selects whether the HPI peripheral pins or McASP1 peripheral pins and GP[15:8, 3, 1, 0] pins are functionally enabled (see Table 5-2). Table 5-2. HPI_EN (HD14 Pin) Peripheral Selection (HPI or McASP1, and Select GPIO Pins)(1) PERIPHERAL PERIPHERAL PIN SELECTION PINS SELECTED DESCRIPTION HPI_EN McASP1 and HPI (HD14 Pin) [173, C14] GP[15:8, 3, 1, 0] HPI_EN = 0 HPI pins are disabled; McASP1 peripheral pins and GP[15:8, 3, 1, 0] pins 0 ü are enabled. All multiplexed HPI/McASP1 and HPI/GPIO pins function as McASP1 and GPIO pins, respectively. To use the GPIO pins, the appropriate bits in the GPEN and GPDIR registers need to be configured. HPI_EN = 1 HPI pins are enabled; McASP1 peripheral pins and GP[15:8, 3, 1, 0] pins 1 ü are disabled [default]. All multiplexed HPI/McASP1 and HPI/GPIO pins function as HPI pins. (1) The HPI_EN (HD[14]) pin cannot be controlled via software. 5.3 Peripheral Selection/Device Configurations Via the DEVCFG Control Register The device configuration register (DEVCFG) allows the user to control the pin availability of the McBSP0, McBSP1, McASP0, I2C1, and timer peripherals. The DEVCFG register also offers the user control of the EMIF input clock source and the timer output pins. For more detailed information on the DEVCFG register control bits, see Table 5-3 and Table 5-4. Table 5-3. Device Configuration Register (DEVCFG) [Address Location: 0x019C0200 −0x019C02FF] 31 16 Reserved(1) R/W-0 15 5 4 3 2 1 0 Reserved(1) EKSRC TOUT1SEL TOUT0SEL MCBSP0DIS MCBSP1DIS R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 LEGEND: R = Read, W = Write, --n = value at reset (1) Do not write non-zero values to these bit locations. 36 DEVICE CONFIGURATIONS Copyright © 2003–2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): SM320C6713-EP |
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