Texas Instruments TMS320C6454 - Manual (Page 197)

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PRODUCT PREVIEW
1
MTCLK (Input)
MTXD7−MTXD4(GMII only),
MTXD3−MTXD0,
MTXEN (Outputs)
1
GMTCLK (Output)
MTXD7−MTXD0,
MTXEN (Outputs)
TMS320C6454
Fixed-Point Digital Signal Processor
SPRS311A – APRIL 2006 – REVISED DECEMBER 2006
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
-1000
NO. PARAMETER UNIT
100/10 Mbps
MIN MAX
1 t
d(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.
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
-1000
NO. PARAMETER UNIT
1000 Mbps
MIN MAX
1 t
d(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.
Figure 7-64. EMAC Transmit Interface Timing [GMII Operation]
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