Texas Instruments OMAP-L138 C6000, Руководство пользователя

Страница: 200 / 274

MII_TXCLK
2 3
1
MII_RXCLK
2 3
1
200
TMS320C6748
SPRS590G – JUNE 2009 – REVISED JANUARY 2017 www.ti.com
Submit Documentation Feedback
Product Folder Links: TMS320C6748
Peripheral Information and Electrical Specifications
Copyright © 2009–2017, Texas Instruments Incorporated
Table 6-97. EMAC Control Module RAM
BYTE ADDRESS DESCRIPTION
0x01E2 0000 - 0x01E2 1FFF EMAC Local Buffer Descriptor Memory
6.22.1.1 EMAC Electrical Data/Timing
Table 6-98. Timing Requirements for MII_RXCLK (see Figure 6-47 )
NO.
1.3V, 1.2V, 1.1V 1.0V
UNIT 10 Mbps 100 Mbps 10 Mbps
MIN MAX MIN MAX MIN MAX
1 t
c(MII_RXCLK)
Cycle time, MII_RXCLK 400 40 400 ns
2 t
w(MII_RXCLKH)
Pulse duration, MII_RXCLK high 140 14 140 ns
3 t
w(MII_RXCLKL)
Pulse duration, MII_RXCLK low 140 14 140 ns
Figure 6-47. MII_RXCLK Timing (EMAC - Receive)
Table 6-99. Timing Requirements for MII_TXCLK (see Figure 6-48 )
NO.
1.3V, 1.2V, 1.1V 1.0V
UNIT 10 Mbps 100 Mbps 10 Mbps
MIN MAX MIN MAX MIN MAX
1 t
c(MII_TXCLK)
Cycle time, MII_TXCLK 400 40 400 ns
2 t
w(MII_TXCLKH)
Pulse duration, MII_TXCLK high 140 14 140 ns
3 t
w(MII_TXCLKL)
Pulse duration, MII_TXCLK low 140 14 140 ns
Figure 6-48. MII_TXCLK Timing (EMAC - Transmit)