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3.3 Peripheral Selection After Device Reset
TMS320TCI6482
Communications Infrastructure Digital Signal Processor
SPRS246F–APRIL 2005–REVISED MAY 2007
On the TCI6482 device, peripherals can be in one of several states. These states are listed in
Table 3-4
.
Table 3-4. Peripheral States
PERIPHERALS THAT CAN BE
IN THIS STATE
HPI
PCI
McBSP0
McBSP1
UTOPIA
EMAC/MDIO
VLYNQ
EMIFA
DDR2 Memory Controller
TCP
VCP
I2C
Timer 0
Timer 1
GPIO
EMAC/MDIO
McBSP0
McBSP1
HPI
PCI
UTOPIA
VLYNQ
RSA0
RSA1
TCP
VCP
I2C
Timer 0
Timer 1
GPIO
MDIO
EMAC/MDIO
McBSP0
McBSP1
HPI
PCI
UTOPIA
VLYNQ
RSA0
RSA1
EMIFA
DDR2 Memory Controller
STATE
DESCRIPTION
Peripheral pin function has been completely
disabled through the device configuration
pins. Peripheral is held in reset and clock is
turned off.
Static powerdown
Peripheral is held in reset and clock is turned
off. Default state for all peripherals not in
static powerdown mode.
Disabled
Clock to the peripheral is turned on and the
peripheral is taken out of reset.
Enabled
Not a user-programmable state. This is an
intermediate state when transitioning from an
enabled state to a disabled state.
Not a user-programmable state. This is an
intermediate state when transitioning from an
disabled state to an enabled state.
All peripherals that can be in a
disabled state.
Disable in progress
All peripherals that can be in an
enabled state.
Enable in progress
Following device reset, all peripherals that are not in the static powerdown state are in the disabled state
by default. Peripherals used for boot such as HPI and PCI are enabled automatically following a device
reset.
Peripherals are only allowed certain transitions between states (see
Figure 3-1
).
Device Configuration
58
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