AM1808_1004 Datasheet, PDF (192/264 Pages) Texas Instruments – AM1808 ARM Microprocessor

AM1808
SPRS653A – FEBRUARY 2010 – REVISED APRIL 2010
6.22.1.1 EMAC Electrical Data/Timing
www.ti.com
NO.
1 t_{c(MII_RXCLK)}
2 t_{w(MII_RXCLKH)}
3 t_{w(MII_RXCLKL)}
Table 6-98. Timing Requirements for MII_RXCLK (see Figure 6-45)
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 6-45. MII_RXCLK Timing (EMAC - Receive)
NO.
1 t_{c(MII_TXCLK)}
2 t_{w(MII_TXCLKH)}
3 t_{w(MII_TXCLKL)}
Table 6-99. Timing Requirements for MII_TXCLK (see Figure 6-45)
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 6-46. MII_TXCLK Timing (EMAC - Transmit)
Table 6-100. Timing Requirements for EMAC MII Receive 10/100 Mbit/s⁽¹⁾ (see Figure 6-47)
NO.
PARAMETER
1 t_{su(MRXD-MII_RXCLKH)} Setup time, receive selected signals valid before MII_RXCLK high
2 t_{h(MII_RXCLKH-MRXD)} Hold time, receive selected signals valid after MII_RXCLK high
(1) Receive selected signals include: MII_RXD[3]-MII_RXD[0], MII_RXDV, and MII_RXER.
1.3V, 1.2V, 1.1V, 1.0V
UNIT
MIN
MAX
8
ns
8
ns
1
2
MII_RXCLK (Input)
MII_RXD[3]-MII_RXD[0],
MII_RXDV, MII_RXER (Inputs)
Figure 6-47. EMAC Receive Interface Timing
192 Peripheral Information and Electrical Specifications
Submit Documentation Feedback
Product Folder Link(s): AM1808
Copyright © 2010, Texas Instruments Incorporated