050_358 Datasheet, PDF (14/16 Pages) Glenair, Inc. – SMPTE 3G-SDI

050-358 Product Brief
PC Board Mount Dual-Transmitter
3G-SDI and HD-SDI, SMF, 3.3V
Table 9
Two-Wire interface ID: Data Fields – Address A2h
NOTE: RX Data fields are not applicable in this table (i.e. Addresses 32-39 and 104-105)
Byte #
Data
Decimal Notes
Byte #
Data
Decimal Notes
Byte #
Data
Decimal Notes
0
Temp H Alarm MSB (Note 1)
26
TX Pwr L Alarm MSB (Note 4)
104
Reserved
1
Temp H Alarm LSB (Note 1)
27
TX Pwr L Alarm LSB (Note 4)
105
Reserved
2
Temp L Alarm MSB (Note 1)
28
TX Pwr H Warning MSB (Note 4)
106
Reserved
3
Temp L Alarm LSB (Note 1)
29
TX Pwr H Warning LSB (Note 4)
107
Reserved
4
Temp H Warning MSB (Note 1)
30
TX Pwr L Warning MSB (Note 4)
108
Reserved
5
Temp H Warning LSB (Note 1)
31
TX Pwr L Warning LSB (Note 4)
109
Reserved
6
Temp L Warning MSB (Note 1)
32
Reserved
110
Status/Control
7
Temp L Warning LSB (Note 1)
33
Reserved
111
Reserved
8
Vcc H Alarm MSB (Note 2)
34
Reserved
112
Flag Bits
9
Vcc H Alarm LSB (Note 2)
35
Reserved
113
Flag Bits
10
Vcc L Alarm MSB (Note 2)
36
Reserved
114
Reserved
11
Vcc L Alarm LSB (Note 2)
37
Reserved
115
Reserved
12
Vcc H Warning MSB (Note 2)
38
Reserved
116
Flag Bits
13
Vcc H Warning LSB (Note 2)
39
Reserved
117
Flag Bits
14
Vcc L Warning MSB (Note 2)
40-45
Reserved
118
Reserved
15
Vcc L Warning LSB (Note 2)
56-94
External Cal Constants (Note 6)
119
Reserved
16
Tx Bias H Alarm MSB (Note 3)
95
Checksum for bytes 0-94
120-122 Reserved
17
Tx Bias H Alarm LSB (Note 3)
96
Temperature MSB (Note 1)
18
Tx Bias L Alarm MSB (Note 3)
97
Temperature LSB (Note 1)
19
Tx Bias L Alarm LSB (Note 3)
98
Vcc MSB (Note 2)
123
Reserved
124
Reserved
125
Reserved
20
Tx Bias H Warning MSB (Note 3)
99
Vcc LSB (Note 2)
126
Reserved
21
Tx Bias H Warning LSB (Note 3)
100
TX Bias MSB (Note 3)
22
Tx Bias L Warning MSB (Note 3)
101
TX Bias LSB (Note 3)
23
Tx Bias L Warning LSB (Note 3)
102
TX Power MSB (Note 4)
127
128-247
248-255
Reserved (Note 8)
Customer Writable (Note 9)
Vendor Specific
24
TX Pwr H Alarm MSB (Note 4)
103
TX Power LSB (Note 4)
25
TX Pwr H Alarm LSB (Note 4)
Notes:
1. Temperature (Temp) is decoded as a 16 bit signed twos compliment integer in increments of 1/256 °C.
2. Supply voltage (VCC) is decoded as a 16 bit unsigned integer in increments of 100 μV.
3. Laser bias current (Tx Bias) is decoded as a 16 bit unsigned integer in increments of 2 μA.
4. Transmitted average optical power (Tx Pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 μW.
5. Reserved
6. Bytes 56-94 are not intended from use but have been set to default values per SFF-8472.
7. Bytes 95 is a checksum calculated (per SFF-8472) and stored prior to product shipment.
8. Byte 127 accepts a write but performs no action (reserved legacy byte).
9. Bytes 128-247 are write enabled (customer writable).
©2015 Glenair, Inc.
GLENAIR, INC.
www.glenair.com
REV: 2
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