TMS320C6454

Fixed-Point Digital Signal Processor

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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)

 

PERIPHERAL FUNCTION SELECTED

 

PCI_EN PIN

PCI66

PCI_EEAI HPI_WIDTH

HPI DATA

HPI DATA

32-BIT PCI

PCI

AEA6 PIN

AEA8 PIN

AEA14 PIN

[Y29]

 

LOWER

UPPER

(66-/33-MHz)

AUTO-INIT

 

[U27]

[P25](1)

[R25]

 

 

 

 

 

 

1

 

0

0

X

 

Disabled

 

Disabled

 

 

 

(default values)

 

 

 

 

 

 

 

Enabled

 

 

 

 

 

 

 

Enabled

 

 

 

 

 

 

 

(33 MHz)

1

 

0

1

X

 

Disabled

(via External I2C

 

 

 

EEPROM)

The MAC_SEL[1:0] configuration pins (AEA[10:9) control which interface is used by the EMAC/MDIO. Table 3-3describes 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.

3.3Peripheral Selection After Device Reset

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

STATE

Static powerdown

Disabled

Enabled

Enable in progress

DESCRIPTION

Peripheral pin function has been completely disabled through the device configuration pins. Peripheral is held in reset and clock is turned off.

Peripheral is held in reset and clock is turned off. Default state for all peripherals not in static powerdown mode.

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.

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.

PRODUCT PREVIEW

Device Configuration

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