AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 210

• 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 CHARACTERISTICS: EXTERNAL ADDRESS DETECTION INTERFACE
Note:
1. May need to delay RX_CLK to capture Start Frame Byte Delimiter (SFBD) at 100 Mbps operation.
210
Parameter
Symbol
External Address Detection Interface: Internal PHY
t
t
t
t
t
t
External Address Detection Interface: External PHY - MII @ 25 MHz
t
t
t
t
External Address Detection Interface: External PHY - MII @ 2.5 MHz
t
t
t
Receive Frame Tag Timing with Media Independent Interface
t
t
t
t
EAD1
EAD2
EAD3
EAD4
EAD5
EAD6
EAD7
EAD8
EAD9
EAD10
EAD11
EAD12
EAD13
EAD14
EAD15
EAD16
EAD17
Parameter Name
SRD setup to
SRD hold to
SFBD# change to
EAR deassertion to
rising edge)
EAR assertion after SFD event
(frame rejection)
EAR assertion width
SFBD change from
EAR deassertion to
rising edge)
EAR assertion after SFD event
(frame rejection)
EAR assertion width
EAR deassertion to
rising edge)
EAR assertion after SFD event
(frame rejection)
EAR assertion width
RXFRTGE assertion from SFBD
(first rising edge)
RXFRTGE, RXFRTGD setup to
RX_CLK
RXFRTGE, RXFRTGD hold to
RX_CLK
RXFRTGE deassertion to
SRDCLK
SRDCLK
SRDCLK
RX_CLK
SRDCLK (first
RX_CLK (first
RX_CLK (first
RX_DV
Test Condition
RX_CLK @25 MHz
RX_CLK @2.5 MHz
Am79C971
Min
40
40
-15
50
0
110
0
40
0
50
400
0
500
0
10
10
40
400
Max
+15
51,090
20 (Note 1) ns
5,080
50,800
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns