AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 227

• Manufacturer Part Number: AM79C971VCW
• Description: PCnet-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
• Manufacturer: Advanced Micro Devices

SWITCHING WAVEFORMS: EXTERNAL ADDRESS DETECTION INTERFACE
SRDCLK
SF/BD
SRD
EAR
RXD[3:0]
RX_CLK
RXD[3:0]
RX_DV
RX_CLK
SF/BD
RX_DV
SF/BD
EAR
EAR
t EAD4
t EAD1
One Zero One
Figure 93. Reject Timing - External PHY MII @ 2.5 MHz
Figure 92. Reject Timing - External PHY MII @ 25 MHz
t EAD8
t EAD11
t EAD2
Preamble
Preamble
Preamble
Figure 91. Reject Timing
t EAD3
SFD
Am79C971
SFD
t EAD5
Bit 0 Bit 1 Bit 2 Bit 3 Bit 4
SFD
t EAD7
t EAD3
DA
DA
Accept
t EAD6
Reject
t EAD9
t EAD12
Data Field
DA
DA
Bit 8 Bit 0
t EAD10
t EAD13
DA
DA
Bit 7 Bit 8
20550D-94
20550D-95
20550D-96
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