AM1808_1112 Datasheet, PDF (188/262 Pages) Texas Instruments – AM1808 ARM Microprocessor

AM1808
SPRS653C – FEBRUARY 2010 – REVISED DECEMBER 2011
BYTE ADDRESS
0x01E2 0000 - 0x01E2 1FFF
Table 5-97. EMAC Control Module RAM
DESCRIPTION
EMAC Local Buffer Descriptor Memory
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5.22.2 EMAC Electrical Data/Timing
NO.
1 t_{c(MII_RXCLK)}
2 t_{w(MII_RXCLKH)}
3 t_{w(MII_RXCLKL)}
Table 5-98. Timing Requirements for MII_RXCLK (see Figure 5-45)
Cycle time, MII_RXCLK
Pulse duration, MII_RXCLK high
Pulse duration, MII_RXCLK low
1.3V, 1.2V, 1.1V
10 Mbps
100 Mbps
MIN MAX MIN MAX
400
40
140
14
140
14
1.0V
10 Mbps
MIN MAX
400
140
140
UNIT
ns
ns
ns
1
2
3
MII_RXCLK
Figure 5-45. MII_RXCLK Timing (EMAC - Receive)
NO.
1 t_{c(MII_TXCLK)}
2 t_{w(MII_TXCLKH)}
3 t_{w(MII_TXCLKL)}
Table 5-99. Timing Requirements for MII_TXCLK (see Figure 5-46)
PARAMETER
Cycle time, MII_TXCLK
Pulse duration, MII_TXCLK high
Pulse duration, MII_TXCLK low
1.3V, 1.2V, 1.1V
10 Mbps
100 Mbps
MIN MAX MIN MAX
400
40
140
14
140
14
1.0V
10 Mbps
MIN MAX
400
140
140
UNIT
ns
ns
ns
1
2
3
MII_TXCLK
Figure 5-46. MII_TXCLK Timing (EMAC - Transmit)
188 Peripheral Information and Electrical Specifications
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