Texas Instruments SM320C6455-EP Mtclk Input MTXD7−MTXD4GMII only, MTXD3−MTXD0, Mtxen Outputs

Models: SM320C6455-EP

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SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

www.ti.com

SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

Table 7-79. Switching Characteristics Over Recommended Operating Conditions for EMAC MII and GMII

Transmit 10/100 Mbit/s(1) (see Figure 7-63)

 

 

-720

 

 

 

 

-850

 

 

NO.

PARAMETER

A-1000/-1000

UNIT

-1200

 

 

 

100/10 Mbps

 

 

 

 

MIN

MAX

 

1

td(MTCLKH-MTXD)Delay time, MTCLK high to transmit selected signals valid

5

25

ns

(1)For MII, Transmit selected signals include: MTXD[3:0] and MTXEN. For GMII, Transmit selected signals include: GMTXD[7:0] and

MTXEN.

1

MTCLK (Input)

MTXD7−MTXD4(GMII only),

MTXD3−MTXD0,

MTXEN (Outputs)

Figure 7-63. EMAC Transmit Interface Timing [MII and GMII Operation]

Table 7-80. Switching Characteristics Over Recommended Operating Conditions for EMAC GMII Transmit

1000 Mbit/s(1) (see Figure 7-64)

 

 

-720

 

 

 

 

-850

 

 

NO.

PARAMETER

A-1000/-1000

UNIT

-1200

 

 

 

1000 Mbps

 

 

 

 

MIN

MAX

 

1

td(GMTCLKH-MTXD)Delay time, GMTCLK high to transmit selected signals valid

0.5

5

ns

(1)For GMII, Transmit selected signals include: GMTXD[7:0] and MTXEN.

1

GMTCLK (Output)

MTXD7−MTXD0,

MTXEN (Outputs)

Figure 7-64. EMAC Transmit Interface Timing [GMII Operation]

210

C64x+ Peripheral Information and Electrical Specifications

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Texas Instruments SM320C6455-EP Mtclk Input MTXD7−MTXD4GMII only, MTXD3−MTXD0, Mtxen Outputs, Gmtclk Output, MTXD7−MTXD0