
www.ti.com
P
2.6 Terminal Functions
TMS320DM6437
Digital Media Processor
SPRS345B–NOVEMBER 2006–REVISED MARCH 2007
The terminal functions tables (
Table 2-5
through
Table 2-32
) identify the external signal names, the
associated pin (ball) numbers along with the mechanical package designator, the pin type, whether the pin
has any internal pullup or pulldown resistors, and a functional pin description. For more detailed
information on device configuration, peripheral selection, multiplexed/shared pin, and debugging
considerations, see the Device Configurations section of this data manual.
All device boot and configuration pins (except PCIEN) are multiplexed configuration pins— meaning they
are multiplexed with functional pins. These pins function as device boot and configuration pins only during
device reset. The input states of these pins are sampled and latched into the BOOTCFG register when
device reset is deasserted (see
Note
below). After device reset is deasserted, the values on these
multiplexed pins no longer have to hold the configuration.
The PCIEN pin is a standalone configuration pin. Its value is latched into the BOOTCFG register when
device reset is deasserted (see
Note
below). Unlike the multiplexed device boot and configuration pins,
the value on the PCIEN pin even after device reset is deasserted
must
hold the configuration.
For proper device operation, external pullup/pulldown resistors may be required on these device boot and
configuration pins.
Section 3.9.1
,
Pullup/Pulldown Resistors
discusses situations where external
pullup/pulldown resistors are required.
Note:
Internal to the chip, the two device reset pins RESET and POR are logically AND’d together for the
purpose of latching device boot and configuration pins. The values on all device boot and configuration
pins are latched into the BOOTCFG register when the logical AND of RESET and POR transitions from
low-to-high.
Device Overview
28
Submit Documentation Feedback