AM79C989JCT Advanced Micro Devices, AM79C989JCT Datasheet - Page 33

• Manufacturer Part Number: AM79C989JCT
• Description: Quad Ethernet Switching Transceiver (QuEST)
• Manufacturer: Advanced Micro Devices

Management Interface
No.
10
11
12
13
14
16
17
18
Symbol
t
t
t
t
t
t
t
t
MII0
MII1
MII2
MII3
MII4
MII6
MII7
MII8
MDIO
MDC
MDC Clock Period.
MDC high pulse.
MDC low pulse.
MDIO setup to rising edge of MDC.
MDIO hold from rising edge of MDC.
MDIO enable from rising edge of MDC.
MDIO valid from rising edge of MDC.
MDIO TRI-STATE® delay from rising edge of MDC.
Figure 3. Management Interface Timing Diagram
11
10
Write to Quest Device
12
13 14
Parameter Description
P R E L I M I N A R Y
Am79C989
16
Read from Quest Device
17
18
Min
50
20
20
10
5
0
0
0
Max
20
20
—
—
—
—
—
20
21173B-7
Unit
ns
ns
ns
ns
ns
ns
ns
ns
33