DS1875T+TR MAXIM [Maxim Integrated Products], DS1875T+TR Datasheet - Page 63
DS1875T+TR
Manufacturer Part Number
DS1875T+TR
Description
PON Triplexer and SFP Controller
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.DS1875TTR.pdf
(92 pages)
- Current page: 63 of 92
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Table 02h, Register 83h: APC DAC
Table 02h, Register 84h: Voltage Index (VINDEX)
84h
83h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Holds the calculated index based on the MON4 voltage measurement. This index is used for the address during
lookup of Table 06h. M4DAC LUT is 32 bytes from address 80h to 9Fh. The calculation of VINDEX is as follows:
When configured as a single LUT, all 32 bytes are used for lookup.
When configured as a double LUT, the first 16 bytes (80h to 8Fh) form the lower LUT and the last 16 bytes (90h to
9Fh) form the upper LUT.
For the three different modes, the index used during the lookup function of Table 06h is as follows:
The digital value used for APC reference and recalled from Table 05h at the adjusted memory address found in
TINDEX. This register is updated at the end of the temperature conversion.
BIT 7
BIT 7
Double/Lower
Double/Upper
2
2
7
______________________________________________________________________________________
7
Single
2
6
2
6
PON Triplexer and SFP Controller
1
1
1
00h
PW2
PW2 and AEN = 0
Volatile
00h
PW2
PW2 and APC EN = 0
Volatile
2
5
2
5
0
0
0
V
BMD
VINDEX =
=
2
0
0
0
4
2
Full Scale
4
255
MON4
800h
VINDEX
0
1
APC DAC
+ 80h
2
4
3
2
3
VINDEX
VINDEX
VINDEX
3
4
4
2
2
2
2
VINDEX
VINDEX
VINDEX
2
3
3
VINDEX
VINDEX
VINDEX
2
2
1
1
1
2
2
VINDEX
VINDEX
VINDEX
BIT 0
BIT 0
2
2
0
0
0
1
1
63
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