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參數(shù)資料
| 型號： | HTR6516 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | SFP TRANSCEIVER for Gigabit Ethernet Fibre Channel |
| 中文描述： | SFP收發(fā)器千兆以太網(wǎng)光纖通道 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 569K |
| 代理商： | HTR6516 |
Page 11 of 15
The measured values located at bytes 96-105 (in the 2 wire address 0xA2) are raw A/D values (16-bit
integers) of transceiver temperature, supply voltage, laser bias current, laser optical output power and
received power. All the measured values are "externally calibrated" over specified temperature and
supply voltage, and then it is necessary to convert raw A/D values to real world units using the
external calibration constants located at bytes 56-91 (0xA2) by the manner as shown in Table 6.2.
Table 6.2 Measured Values / 2 wire address 1010001X (0xA2)
Name
Temp MSB
Temp LSB
complement integer). Actual temperature, T, is given by, T=T
1
*T
AD
+T
0
,
where T
1
and T
0
are calibration data at bytes 84-87. The result is 16-bit
signed 2's complement value with LSB equal to 1/256 deg-C (see Table
6.3a), yielding a total range of -128 to +128 deg-C. Accuracy of result is
better than +/-3 deg-C.
Vcc MSB
Internally measured supply voltage, V
AD
(16-bit unsigned integer). Actual
voltage, V, is given by, V=V
1
*V
AD
+V
0
, where V
1
and V
0
are calibration
data at bytes 88-91. The result is 16-bit unsigned value with LSB equal to
100
μ
V (see Table 6.3b), yielding a total range of 0 to 6.55 V. Accuracy of
result is better than +/-50 mV. Note that transmitter supply voltage
measured since VccT and VccR are isolated.
Laser Bias MSB
Laser Bias LSB
current, B, is given by, B=B
1
*B
AD
+B
0
, where B
1
and B
0
are calibration
data at bytes 76-79. The result is 16-bit unsigned value with LSB equal to
2
μ
A (see Table 6.3b), yielding a total range of 0 to 131 mA. Accuracy of
result is better than +/-8 mA.
Tx Power MSB
Tx Power LSB
given by, P=P
1
*P
AD
+P
0
, where P
1
and P
0
are calibration data at bytes
82-85. The result is 16-bit unsigned value with LSB equal to 0.1
μ
W (see
Table 6.3b), yielding a total range of 0 to 6.55 mW. Accuracy is better
than +/-3dBm.
Rx Power MSB
Rx Power LSB
given by
R = R
4
*R
AD4
+ R
3
*R
AD3
+ R
2
*R
AD2
+ R
1
*R
AD
+ R
0
,
where R
4
, R
3
, R
2
, R
1
and R
0
are calibration data at bytes 56-75. The result
is 16-bit unsigned value with LSB equal to 0.1
μ
W (see Table 6.3b),
yielding a total range of 0 to 6.55 mW. Accuracy is better than +/-3dBm
over the specified optical input power.
Byte
96
97
Description
Internally measured transceiver temperature, T
AD
(16-bit signed 2's
98
99
Vcc LSB
100
101
Measured Laser bias current, B
AD
(16-bit unsigned integer). Actual
102
103
Measured Tx power, P
AD
(16-bit unsigned integer). Actual power, P, is
104
105
Measured Rx power, R
AD
(16-bit unsigned integer). Actual power, R, is
The formats of values shown in Table 6.2 are interpreted below. The result of temperature, T, and
the calibration intercepts, T
0
, V
0
, B
0
, and P
0
, are 16-bit signed 2's complement numbers with
corresponding LSB (e.g. laser bias, B
0
, has 2
μ
A LSB) as shown in Table 6.3a. The result of Vcc, V,
laser bias, B, Tx power, P, and Rx power, R are 16-bit unsigned numbers with corresponding LSB (e.g.
laser bias, B, has 2
μ
A LSB) as shown in Table 6.3b. The calibration slopes, T
1
, V
1
, B
1
, and P
1
, are
unsigned fixed-point numbers as shown in Table 6.3c. The calibration coefficients, R
4
, R
3
, R
2
, R
1
, and
R
0
, are IE E E-754 single precision floating-point numbers as shown in Table 6.3d.
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PDF描述 |
|---|---|
| HTR6545 | SFF TRANSCEIVER |
| HTY75-P | Current Transducer HTY 50~100-P |
| HTY50-P | Current Transducer HTY 50~100-P |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| HTR6516R | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SFP TRANSCEIVER for Gigabit Ethernet Fibre Channel |
| HTR6516R2 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SFP TRANSCEIVER for Gigabit Ethernet Fibre Channel |
| HTR6543 | 制造商:Hitachi 功能描述: |
| HTR6545 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:SFF TRANSCEIVER |
| HTRC110 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:HITAG reader chip |
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