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3.3 Peripheral Selection After Device Reset
TMS320C6454
Fixed-Point Digital Signal Processor
SPRS311A–APRIL 2006–REVISED DECEMBER 2006
Table 3-2. PCI_EN, PCI66, PCI_EEAI, and HPI_WIDTH Peripheral Selection (HPI and PCI) (continued)
CONFIGURATION PIN SETTING
(1)
PCI66
PCI_EN PIN
AEA6 PIN
[Y29]
[U27]
PERIPHERAL FUNCTION SELECTED
PCI_EEAI
AEA8 PIN
[P25]
(1)
HPI_WIDTH
AEA14 PIN
[R25]
HPI DATA
LOWER
HPI DATA
UPPER
32-BIT PCI
(66-/33-MHz)
PCI
AUTO-INIT
Disabled
(default values)
Enabled
(via External I2C
EEPROM)
1
0
0
X
Disabled
Enabled
(33 MHz)
1
0
1
X
Disabled
The MAC_SEL[1:0] configuration pins (AEA[10:9) control which interface is used by the EMAC/MDIO.
Table 3-3
 describes the effect of the MACSEL[1:0] configuration pins.
Table 3-3. MAC_SEL[1:0] Peripheral Selection (EMAC)
MAC_SEL[1:0]/
AEA[10:9] PINS [M25, M27]
CONFIGURATION PIN SETTING
00b
01b
10b
11b
EMAC/MDIO
PERIPHERAL FUNCTION SELECTED
10/100 EMAC/MDIO with MII Interface [default]
10/100 EMAC/MDIO with RMII Interface
10/100/1000 EMAC/MDIO with GMII Interface
10/100/1000 EMAC/MDIO with RGMII Interface
(1)
(1)
RGMII interface requires a 1.5-/1.8-V I/O supply.
On the C6454 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
McBSP1
EMAC/MDIO
EMIFA
DDR2 Memory Controller
I2C
Timer 0
Timer 1
GPIO
EMAC/MDIO
McBSP0
McBSP1
HPI
PCI
I2C
Timer 0
Timer 1
GPIO
MDIO
EMAC/MDIO
McBSP0
McBSP1
HPI
PCI
EMIFA
DDR2 Memory Controller
All peripherals that can be in
an enabled state.
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
Enabled
Clock to the peripheral is turned on and the peripheral is taken out of reset.
Not a user-programmable state. This is an intermediate state when
transitioning from an disabled state to an enabled state.
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Device Configuration
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