bbt3821 Intersil Corporation, bbt3821 Datasheet - Page 67

• Manufacturer Part Number: bbt3821
• Description: Octal Multi-rate Lx4/cx4 - Xaui Re-timer
• Manufacturer: Intersil Corporation

MDIO (from STA)
MDIO (from MMD)
Register Contents
MDD Sourced
STA Sourced
MDIO
MDIO
MDC
67
frame
MDC
Prev
FIGURE 15. MDIO FRAME AND REGISTER TIMING
T
STA
MDH
T
FIGURE 16. MDIO INTERFACE TIMING
Preamble
MDC
T
Read Operations Shown in Red
Preamble
T
MMD
MDSU
BBT3821
ST
OP Prt/Dev Ad
TA (for READ Ops)
Old Data
TA
Address/Data
T
Update
T
MDCD
MMD
Idle/Preamble
STA
New Data