bbt3821 Intersil Corporation, bbt3821 Datasheet - Page 23

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

Note (1): These bits are latched high on any Fault condition detected. They are reset low (cleared) on being read. They will also be reset low on reading the LASI
Note (2): The source of ‘Loss of Signal’ depends on the LX4/CX4 select LX4_MODE pin (see register 1.10, 12, note (1) below).
Note (1): In CX4 mode the TCXnP/N pin outputs will be disabled; in LX4 Mode only TX_ENA[n] pin is disabled.
Note (1): These bits reflect the OPRLOS[3:0] pins (Table 99) in LX4 mode, or the CX4 SIGNAL_DETECT function in CX4 mode, depending on the LX4_MODE select pin.
Note (1): These values reflect the IEEE 802.3ak 10GBASE-CX4 specification.
1.9.15:5
1.9.4
1.9.3
1.9.2
1.9.1
1.9.0
1.8.5
1.8.4
1.8.3
1.8.2
1.8.1
1.8.0
1.10.15:5
1.10.4
1.10.3
1.10.2
1.10.1
1.10.0
1.11.15:1
1.11.0
BIT
BIT
BIT
(1)
BIT
registers 1.9003’h (bit 10, see Table 27) or 1.9004’h (bit 11, see Table 28).
10GBASE-ER
10GBASE-LX4
10GBASE-SW
10GBASE-LW
10GBASE-EW
PMA Loopback
Reserved
PMD Dis 3
PMD Dis 2
PMD Dis 1
PMD Dis 0
PMD Dis All
Reserved
PMD Rx Ln 3
PMD Rx Ln 2
PMD Rx Ln 1
PMD Rx Ln 0
PMD Rx Glob
Reserved
10GBASE-CX4
Table 10. IEEE PMA/PMD STATUS 2 DEVICE PRESENT & FAULT SUMMARY REGISTER (Continued)
NAME
NAME
NAME
NAME
23
Disable TX on Lane 3
Disable TX on Lane 2
Disable TX on Lane 1
Disable TX on Lane 0
Disable TX on all 4 Lanes
PMD Signal Det’d
PMD Signal Det’d
PMD Signal Det’d
PMD Signal Det’d
PMD Signal Det’d
0 = cannot perform
1 = can perform
0 = cannot perform
0 = cannot perform
0 = cannot perform
1 = can perform
Table 13. IEEE EXTENDED PMA/PMD CAPABILITY REGISTER
1 = can perform
Table 12. IEEE PMD SIGNAL DETECT REGISTER
SETTING
Table 11. IEEE TRANSMIT DISABLE REGISTER
MDIO REGISTER ADDRESSES = 1.8 (1.0008’h)
SETTING
SETTING
SETTING
MDIO REGISTER ADDRESS = 1.10 (1.000A’h)
MDIO REGISTER ADDRESS = 1.9 (1.0009’h)
MDIO Register Addresses = 1.11 (1.000B’h)
(1)
(1)
(1)
(1)
BBT3821
0000’h
1’b
1’b
1’b
1’b
1’b
1’b
DEFAULT
0’b
1’b
0’b
0’b
0’b
1’b
DEFAULT
DEFAULT
(1)
(1)
(1)
(1)
(1)
0’b
0’b
0’b
0’b
0’b
DEFAULT
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Device can be 10GBASE-CX4
1 = PMD Signal Detected on respective Lane
(Global, all Lanes)
0 = PMD Signal not detected on respective Lane
(Global, any
Lane)
Device cannot be 10GBASE-ER
Device can be 10GBASE-LX4
Device cannot be 10GBASE-SW
Device cannot be 10GBASE-LW
Device cannot be 10GBASE-EW
Device can perform PMA loopback
1 = Disable PMD Transmit on respective Lane
0 = Enable PMD Transmit on respective Lane
(unless TXON/OFF pin is Low)
(1)
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
(1)