Texas Instruments SM320C6455-EP manual Rgrefclk, RSV05, RSV07 RSV09, Reserved for Test

SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR		www.ti.com
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
	Table 2-3. Terminal Functions	(continued)
SIGNAL	TYPE(1) IPD/IPU(2)	DESCRIPTION
NAME
	NO.

ETHERNET MAC (EMAC) [RGMII]

If the Ethernet MAC (EMAC) and MDIO are enabled (AEA12 driven low [UTOPIA_EN = 0]), there are two additional configuration pins — the MAC_SEL[1:0] (AEA[10:9] pins) that select one of the four interface modes (MII, RMII, GMII, or RGMII) for the EMAC/MDIO interface. For more detailed information on the EMAC configuration pins, see Section 3, Device Configuration.

			RGMII reference clock (O). This 125-MHz reference clock is provided as a
			convenience. It can be used as a clock source to a PHY, so that the PHY may
RGREFCLK	C4	O/Z	generate RXC clock to communicate with the EMAC. This clock is stopped
			while the device is in reset. This pin is available only when RGMII mode is
			selected ( MACSEL[1:0] =11).

RGTXC	D4	O/Z
RGTXD3	A2
RGTXD2	C3	O/Z
RGTXD1	B3
RGTXD0	A3
RGTXCTL	D3	O/Z
RGRXC	E3	I
RGRXD3	C1	I
RGRXD2	E4	I
RGRXD1	E2	I
RGRXD0	E1	I
RGRXCTL	C2	I
RSV02	V5
RSV03	W3
RSV04	N11
RSV05	P11
RSV07	G4	I
RSV09	D26	I

RSV11D24

RSV12C24

RGMII transmit clock (O). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RGMII transmit data [3:0] (O). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RGMII transmit enable (O). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RGMII receive clock (I). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RGMII receive data [3:0] (I). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RGMII receive control (I). This pin is available only when RGMII mode is selected (MACSEL[1:0] =11).

RESERVED FOR TEST

Reserved. These pins must be connected directly to core supply (CVDD) for proper device operation.

Reserved. These pins must be connected directly to 1.5-/1.8-V I/O supply (DVDD15) for proper device operation.

NOTE: If the EMAC RGMII is not used, these pins can be connected directly to ground (VSS).

Reserved. This pin must be connected to ground (VSS) via a 200-Ωresistor for proper device operation.

NOTE: If the DDR2 Memory Controller is not used, the VREFSSTL, RSV11, and RSV12 pins can be connected directly to ground (VSS) to save power. However, connecting these pins directly to ground will prevent boundary-scan from functioning on the DDR2 Memory Controller pins. To preserve boundary-scan functionality on the DDR2 Memory Controller pins, see Section 7.3.4.

Reserved. This pin must be connected to the 1.8-V I/O supply (DVDD18) via a 200-Ωresistor for proper device operation.

NOTE: If the DDR2 Memory Controller is not used, the VREFSSTL, RSV11, and RSV12 pins can be connected directly to ground (VSS) to save power. However, connecting these pins directly to ground will prevent boundary-scan from functioning on the DDR2 Memory Controller pins. To preserve boundary-scan functionality on the DDR2 Memory Controller pins, see Section 7.3.4.

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