DS1876T+TR MAXIM [Maxim Integrated Products], DS1876T+TR Datasheet - Page 55

• Manufacturer Part Number: DS1876T+TR
• Description: SFP Controller with Dual LDD Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

Table 02h, Register B4h–B7h: PW2
Table 02h, Register B8h: RESERVED
Table 02h, Register B9h: HBIAS2 DAC
B4h
B5h
B6h
B7h
B9h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
This register is reserved.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
The PWE value is compared against the value written to this location to enable PW2 access. At power-on, the
PWE value is set to all ones. Thus, writing these bytes to all ones grants PW2 access on power-on without writing
the password entry. All reads of this register are 00h.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
A2h AND B2h MEMORY
MEMORY TYPE
The digital value used for the HBIAS2 reference and recalled from Table 06h (Registers E0h–E7h) (transmitter 2) at
the adjusted memory address found in TINDEX. This register is updated at the end of the temperature conversion.
Comparisons greater than V
______________________________________________________________________________________
BIT 7
BIT 7
2
2
2
2
2
31
23
15
7
7
SFP Controller with Dual LDD Interface
2
2
2
2
2
30
22
14
6
6
HBIAS2
FFFF FFFFh
N/A
PW2
Nonvolatile (SEE)
N/A
N/A
N/A
N/A
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
(PW2 and QT2EN = 0) or (PW1 and RWTBL2 and QT2EN = 0)
Common A2h and B2h memory location
Volatile
2
2
2
2
2
29
21
13
5
compared against V
5
V
HBIAS2
=
2
2
2
2
2
28
20
12
4
Full Scale
4
256
BMON2
×
HBIAS2 DAC
2
2
2
create an HBAL alarm.
2
2
27
19
11
3
3
2
2
2
2
2
26
18
10
2
2
2
2
2
2
2
25
17
9
1
1
BIT 0
BIT 0
2
2
2
2
2
24
16
8
0
0
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