Datasheet

Table Of Contents
TMS320DM6467T
www.ti.com
SPRS605C JULY 2009REVISED JUNE 2012
4.5 Configurations At Reset
Some device configurations are determined at reset. The following subsections give more details.
4.5.1 Device and Peripheral Configurations at Device Reset
Table 3-5, BOOT Terminal Functions lists the device boot and configuration pins that are latched at device
reset for configuring basic device settings for proper device operation. Table 4-13, summarizes the device
boot and configuration pins, and the device functions that they affect.
Table 4-13. Default Functions Affected by Device Boot and Configuration Pins
DEVICE BOOT AND
BOOT SELECTED PIN MUX CONTROL GLOBAL SETTING PERIPHERAL SETTING
CONFIGURATION PINS
BOOTMODE[3:0] Boot Mode PINMUX0/PINMUX1 I/O Pin Power: PSC/Peripherals:
Registers: Based on Based on
Based on BOOTMODE[3:0], the BOOTMODE[3:0], the
BOOTMODE[3:0], the bootloader code programs bootloader code programs
bootloader code programs VDD3P3V_PWDN register the PSC to put boot-
PINMUX0 and PINMUX1 to power up the I/O pins related peripheral(s) in the
registers to select the required for boot. Enable State, and
appropriate pin functions programs the peripheral(s)
required for boot. for boot operation.
CS2BW EMIFA Direct Boot Mode PINMUX0.HPIEN = 0 The default width of the
PINMUX0.PCIEN = 0 first EMIFA chip select
PINMUIX0.ATAEN = 0 space (CS2) is
determined by the
CS2BW value. If CS2BW
= 0, the space defaults to
8-bits wide. If CS2BW = 1,
it defaults to 16-bits wide.
This allows the ARM to
make full use of the width
of the attached memory
device when booting from
EMIFA.
PCIEN
(1)
Host Boot: PINMUX0.PCIEN: PSC/Peripheral
PCIEN selects the type of sets this field to control (Applicable to Host Boot
Host Boot the PCI pin muxing in . only):
(HPI Boot or PCI Boot)
(1) (2)
Based on the Host Boot
type (PCI or HPI), the
bootloader code programs
the PSC to put the
corresponding peripheral
in the Enable State, and
programs the peripheral
for boot operation.
(1) Software can modify all PINMUX0 and PINMUX1 bit fields from their defaults.
(2) In addition to pin mux control, PCIEN also affects the internal pullup/down resistors of the PCI capable pins. When PCIEN = 0, internal
pullup/down resistors on the PCI capable pins are enabled. When PCIEN = 1, internal pullup/down resistors on the PCI capable pins are
disabled to be compliant to the PCI Local Bus Specification Revision 2.3.
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