Texas Instruments SM320C6455-EP manual UTOPIAEN, and MACSEL10 Peripheral Selection Utopia and Emac

SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR								www.ti.com
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
	Table 3-2. PCI_EN, PCI66, PCI_EEAI, and HPI_WIDTH Peripheral Selection (HPI and PCI)
	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]
0		0	0	0	Enabled	Hi-Z	Disabled	N/A
0		0	0	1	Enabled	Enabled	Disabled	N/A
								Enabled
1		1	1	X		Disabled	Enabled	(via External I2C
							(66 MHz)	EEPROM)
1		1	0	X		Disabled		Disabled
1		0	0	X		Disabled		Disabled
								(default values)
							Enabled
								Enabled
1		0	1	X		Disabled	(33 MHz)
								(via External I2C

EEPROM)

(1)PCI_EEAI is latched at reset as a configuration input. If PCI_EEAI is set as one, then default values are loaded from an external I2C

EEPROM.

The UTOPIA and EMAC/MDIO pins are also multiplexed on the C6455 device. The UTOPIA_EN function (AEA12 pin) controls the function of these multiplexed pins. The MAC_SEL[1:0] configuration pins (AEA[10:9) control which interface is used by the EMAC/MDIO. Note that since the PCI shares some pins with the UTOPIA peripheral, its state also affects the operation of the UTOPIA. Table 3-3describes the effect of the UTOPIA_EN, PCI_EN, and MACSEL[1:0] configuration pins.

Table 3-3. UTOPIA_EN, and MAC_SEL[1:0] Peripheral Selection (UTOPIA and EMAC)

CONFIGURATION PIN SETTING

UTOPIA_EN	PCI_EN PIN	MAC_SEL[1:0]
		AEA[10:9] PINS
AEA12 PIN [R28]	[Y29]
		[M25, M27]

PERIPHERAL FUNCTION SELECTED

EMAC/MDIO UTOPIA

0	x	00b
0	x	01b
0	x	10b
0	x	11b
1	0	00b, 01b, or 10b
1	0	11b
1	1	00b, 01b, or 10b
1	1	11b

(1)RGMII interface requires a 1.5-/1.8-V I/O supply.

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)

Disabled

10/100/1000 EMAC/MDIO with RGMII Interface(1)

Disabled

10/100/1000 EMAC/MDIO with RGMII Interface(1)

Disabled

Disabled

Disabled

Disabled

UTOPIA Slave with Full Functionality

UTOPIA Slave with Full Functionality

UTOPIA Slave with Single PHY Mode Only

UTOPIA Slave with Single PHY Mode Only

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