KS8721BT Micrel Inc, KS8721BT Datasheet - Page 28

• Manufacturer Part Number: KS8721BT
• Description: IC TXRX PHY 10/100 TX/FX 48TQFP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KS8721BT

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• For Use With: 576-1009 - BOARD EVAL EXPERIMENT KS8721BT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Symbol
Symbol
t
t
t
t
M9999-030106
P
MD1
MD2
MD3
Parameter
Parameter
MDC Period
MDC Period
MDC Period
MDC Period
MDC Period
MDC Period
MDIO Set-Up to MDC (MDIO as input)
MDIO Set-Up to MDC (MDIO as input)
MDIO Set-Up to MDC (MDIO as input)
MDIO Set-Up to MDC (MDIO as input)
MDIO Set-Up to MDC (MDIO as input)
MDIO Set-Up to MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDIO Hold after MDC (MDIO as input)
MDC to MDIO Valid (MDIO as output)
MDC to MDIO Valid (MDIO as output)
MDC to MDIO Valid (MDIO as output)
MDC to MDIO Valid (MDIO as output)
MDC to MDIO Valid (MDIO as output)
MDC to MDIO Valid (MDIO as output)
MDC
MDI O
(Into Ch ip)
MDI O
(Out of Chip)
Figure 8. Serial Management Interface Timing
Table 6. Serial Management Interface Timing
t
MD1
Valid
Data
t
t
MD2
MD3
t
P
28
Valid
Valid
Data
Data
Min
Min
Min
Min
10
10
10
10
10
10
10
10
10
10
10
10
Typ
Typ
Typ
Typ
400
400
400
400
400
400
222
222
222
222
222
222
Max
Max
Max
Max
March 2006
Units
Units
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns