bbt3821 Intersil Corporation, bbt3821 Datasheet - Page 68

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

SDA
SCL
Control Registers
T
engine
repeated START
D.0.15
MDIO
RSTBIT
reset
MDC
START or
condition
or
Sr
S
condition
68
MSB
T
RESET
RSTN
1
SDA
SCL
FIGURE 18. BEGINNING I
T
T
Bit reset
Update
Config
FIGURE 17. MDIO TIMING AFTER SOFT RESET (D.0.15)
2
Engine reset, ignores
RST
FIGURE 19. I
preamble
T
wait
WAIT
7
T
train
T
2
MDRST
C BUS INTERFACE PROTOCOL
TRAIN
acknowledgement
signal from slave
BBT3821
2
Default Data
C NVR READ AT THE END OF RESET
interrupt within slave
8
wait
T
byte complete,
WAIT
ACK
9
(Internal States,
not observable)
Read NVR
clock line held low while
interrupts are served
1
st
1
preamble
bit
Read DOM
2
Auto-Config Data
3 - 8
signal from receiver
acknowledgement
ACK
9
(done)
repeated START
STOP or
condition
Sr
or
P