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參數(shù)資料
| 型號(hào)： | HTR6516R2 |
| 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(yè)數(shù)： | 13/16頁(yè) |
| 文件大?。?/td> | 569K |
| 代理商： | HTR6516R2 |
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Page 12 of 15
Table 6.3a 16-Bit Signed 2's Complement Number (MSB at low address)
Bit 7
Bit 6
Bit 5
Bit 4
MSB
SIGN
2
14
2
13
2
12
LSB
2
7
2
6
2
5
2
4
Bit 3
2
11
2
3
Bit 2
2
10
2
2
Bit 1
2
9
2
1
Bit 0
2
8
2
0
Table 6.3b 16-bit Unsigned Number (MSB at low address)
Bit 7
Bit 6
Bit 5
Bit 4
2
15
2
14
2
13
2
12
2
7
2
6
2
5
2
4
Bit 3
2
11
2
3
Bit 2
2
10
2
2
Bit 1
2
9
2
1
Bit 0
2
8
2
0
MSB
L SB
Table 6.3c Unsigned Fixed-Point Number (MSB at low address)
Bit 7
Bit 6
Bit 5
Bit 4
MSB
2
7
2
6
2
5
LSB
2
-1
2
-2
2
-3
Bit 3
2
3
2
-5
Bit 2
2
2
2
-6
Bit 1
2
1
2
-7
Bit 0
2
0
2
-8
2
4
2
-4
Table 6.3d IE E E-754 Single Precision Floating-Point Number (MSB at low address)
Bit 7
Bit 6
Bit 5
MSB
SIGN
E XPONE NT
MANTISSA
LSB
MANTISSA
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
E XPONE NT
MANTISSA
This transceiver is implemented two optional status bits, "Logic States" at byte 110 (0xA2) and "A/D
Updated" at byte 111 (0xA2) as shown in Table 6.4. "A/D updated" status bits allows the user to
verify if an update from the analog-digital conversion has occurred to the measured values,
temperature, Vcc, laser bias, Tx power and Rx power. The user writes the byte to 0x00. Once a
conversion is complete for a given value, its bit will change to '1'.
Table 6.4 Optional Status Bits / 2 wire address 1010001X (0xA2)
Name
Tx Disable State
Optional digital state of the Tx Disable input pin.
Soft Tx Disable Control
Not supported (set to 0).
Reserved
Set to 0.
Rx Rate Select State
Not supported (set to 1).
Soft Rate Select Control
Not supported (set to 0).
Tx Fault
Optional digital state of the Tx Fault output pin.
LOS
Optional digital state of the LOS output pin.
Power on Logic
Bit will be 0 when the analog monitoring is active.
Temp A/D Valid
Indicates A/D value in Bytes 96/97 is valid.
Vcc A/D Valid
Indicates A/D value in Bytes 98/99 is valid.
Laser Bias A/D Valid
Indicates A/D value in Bytes 100/101 is valid.
Tx Power A/D Valid
Indicates A/D value in Bytes 102/103 is valid.
Rx Power A/D Valid
Indicates A/D value in Bytes 104/105 is valid.
Reserved
Set to 0.
Reserved
Set to 0.
Reserved
Set to 0.
Byte
110
110
110
110
110
110
110
110
111
111
111
111
111
111
111
111
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Description
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