Texas Instruments AM1808 User Manual page 190

AM1808
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
BYTE ADDRESS
0x01E2 0000 - 0x01E2 1FFF
6.22.2 EMAC Electrical Data/Timing
Table 6-98. Timing Requirements for MII_RXCLK (see
NO.
1 t Cycle time, MII_RXCLK
c(MII_RXCLK)
2 t Pulse duration, MII_RXCLK high
w(MII_RXCLKH)
3 t Pulse duration, MII_RXCLK low
w(MII_RXCLKL)
MII_RXCLK
Table 6-99. Timing Requirements for MII_TXCLK (see
NO.
1 t Cycle time, MII_TXCLK
c(MII_TXCLK)
2 t Pulse duration, MII_TXCLK high
w(MII_TXCLKH)
3 t Pulse duration, MII_TXCLK low
w(MII_TXCLKL)
MII_TXCLK
190 Peripheral Information and Electrical Specifications
Table 6-97. EMAC Control Module RAM
EMAC Local Buffer Descriptor Memory
1
2
Figure 6-45. MII_RXCLK Timing (EMAC - Receive)
1
2
Figure 6-46. MII_TXCLK Timing (EMAC - Transmit)
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DESCRIPTION
Figure 6-45)
1.3V, 1.2V, 1.1V
10 Mbps 100 Mbps
MIN MAX MIN
400 40
140 14
140 14
3
Figure 6-46)
1.3V, 1.2V, 1.1V
10 Mbps 100 Mbps
MIN MAX MIN
400 40
140 14
140 14
3
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AM1808
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1.0V
10 Mbps UNIT
MAX MIN MAX
400 ns
140 ns
140 ns
1.0V
10 Mbps UNIT
MAX MIN MAX
400 ns
140 ns
140 ns