bbt3821 Intersil Corporation, bbt3821 Datasheet - Page 18

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

(SIG DET)
4.C00Ah.
PHY XS
REG.
LOS
3:0
SYNCH
1.C01Dh.3
BYTE
PCS
REG
3.24
[3:0]
Clear on read
REG
Clear on read
OPTX
LBC
REGISTER 1.9003h.[6:0] RX_ALARM_STATUS
ALARM PIN POLARITY
REG 1.C01Dh.2:0
OPRX
OP
TEMP
OPT
REGISTER 1.9004h.[10:0] TX_ALARM_STATUS
3.C007h.
ERROR
CODE
REG.
PCS
OPTX
7:4
LOP
1.C012h.13
POLARITY
REG
REGISTER 1.9001h[10:0] TX_ALARM CONTROL
REGISTER 1.9000h[6:0] RX_ALARM CONTROL
3.C007h.
ERROR
FAULT
FIFO
REG.
PCS
11:8
TX_
Latch on high
4.24.3:0
PHY XS
SYNCH
BYTE
REG.
See IEEE
REG 1.C012h.[12:8]
GPIO POLARITY
GPIO
[4:0]
4.C007h.
PHY XS
ERROR
REG.
FIFO
11:8
Latch on high
4.C007h.
PHY XS
ERROR
FIGURE 5. LASI EQUIVALENT SCHEMATIC
CODE
REG.
7:4
RX_FLAG
REG. 3.24.12
REG. 4.24.12
REG 1.C012h.[4:0]
REG. 1.10.0
GPIO-LASI EN
(See Also Figure 4)
TX_FLAG
Latch
hi
Clear on Read of 1.9005
STATUS
LINK
RX_ALARM
TX_ALARM
RX_FLAG CONTROL
Clock on
REG 1.9007h[7:6]
REG 1.A074h[7:6]
change
TX_FLAG CONTROL
any
REG 1.9006h[7:0]
REG 1.A070h[7:0]
RX_FLAG
GPIO->LASI
TX_FLAG
D
LS_ALARM
CLK
CLR
Q
REG 1.9005h[3:0]
REG 1.9002h[3:0]
LASI CONTROL
LASI STATUS
TX ALARM
RX ALARM
LS ALARM
Masked
Masked
Masked
Masked
ALARM
GPIO
LASI
LX4
CX4
Legend
External Pad
CX4 vs LX4
Selector for
LASI