TXN174310850F16 Intel, TXN174310850F16 Datasheet - Page 35

• Manufacturer Part Number: TXN174310850F16
• Manufacturer: Intel

Specifications of TXN174310850F16

• Optical Fiber Type: TX/RX
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: 0C to 70C
• Mounting: Screw
• Lead Free Status / RoHS Status: Compliant

Intel
Table 67.
Table 68.
7.0
2-Nov-2007
Document Number: 306424-005
®
TXN17431 (0850) Optical Transceiver
DOM – Rx_flag Status Register (DID = 1, Address = A071h)
DOM Command and Status Register (DID = 1, Address = A100h)
Digital Optical Monitoring
The TXN17431 Optical Transceiver supports Digital Optical Monitoring (DOM) according
to the XENPAK MSA 1.0b specification. This feature allows diagnostic monitoring of the
transmitter and receiver optical power, bias current, transceiver operating temperature
and state. The threshold alarm can be set appropriately to trigger LASI.
There are 256 8-bit registers resident in MDIO register space 1.A000h to 1.A0FFh that
support DOM. These registers store the digitized value of analog temperature/bias
current measurements, warning and threshold values, and control/status settings. A
DOM agent (microcontroller on board) loads these registers upon reset and polls these
registers periodically for status checks. Layout of DOM registers can be found in
Table 55 “EEPROM Registers (DID = 1h, from Address = 8007h to Address = 8106h)”
on page 30
page
The following two flag values (ref 1.9006h and 1.9007h) trigger LASI alarms when
DOM fault conditions occur:
• Rx_flag: Register 1.A071h contains bits to indicate the receiver Fault Status.
• Tx_flag. Register 1.A070h contains bits to indicate the transmitter Fault Status.
15:14
13:12
15:8
11:4
5:0
3:2
1:0
Bit
Bit
7
6
Register 1.9007h selects the fault conditions in register 1.A071 to be reported via
the Rx Flag bit (1.A071 AND 1.9007). The logic OR of any of the selected fault
conditions is then reflected by Rx Flag.
Register 1.9006h selects the fault conditions in register 1.A071 to be reported via
32, and also in XENPAK MSA 1.0b, Tables 27-28.
Reserved
Rx Optical Power High
Alarm
Rx Optical Power Low
Alarm
Reserved
Reserved
DOM Write Command
Status
Reserved
DOM Command Status
DOM Update commands
through
Functionality
Functionality
Intel
®
TXN17431 (0850) 10.3 Gbps 850 nm Optical Transceiver Compliant with XENPAK MSA
Table 59 “LASI Control Register (DID = 1h, Address = 9002h)” on
–
–
–
–
–
00 = Idle, no command
01 = Command completed
10 = Command in progress
11 = Previous command failed
–
00 = Idle, no command
01 = Command completed
10 = Command in progress
11 = Previous command failed
00 = Write, single DOM update (default)
01 = Write, slow periodic update
10 = Write, inter periodic update
11 = Write, fast periodic update
Description
Description
Access
Access
RO, LH
RO, LH
Datasheet
R/W
RO
RO
RO
RO
RO
–
35