DS1865T+TR MAXIM [Maxim Integrated Products], DS1865T+TR Datasheet - Page 47
DS1865T+TR
Manufacturer Part Number
DS1865T+TR
Description
PON Triplexer Control and Monitoring Circuit
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.DS1865TTR.pdf
(66 pages)
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Table 02h, Register 84h: Vindex
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 (Table 06h) is 32 bytes from address 80h to 9Fh. The calculation of Vindex is as follows:
Table 02h, Register 85h: M4DAC
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
The digital value used for M4DAC and recalled from Table 06h at the adjusted memory address is found in Vindex. (R.O.)
This register is updated at the end of the MON4 conversion.
Table 02h, Register 86h: Device ID
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Hardwired connections to show device ID.
When configured as a single LUT, all 32 bytes are used for lookup.
W hen confi g ur ed as a d oub l e LU T, the fi r st 16 b ytes ( 80h- 8Fh) for m the l ow er LU T and the l ast 16 b ytes ( 90h- 9Fh) for m the up p er LU T.
For the three different modes, the index used during the lookup function of Table 06h is as follows:
Double / Upper
Double / Lower
Single
84h
86h
85h
bit7
bit7
bit7
2
2
0
7
7
1
1
1
00h
PW2
PW2 and (AEN = 0)
00 00h
PW2
PW2 and (M4DAC-EN = 0)
65h
PW2
N/A
Volatile
Volatile
ROM
2
2
1
6
6
0
0
0
____________________________________________________________________
2
2
1
5
5
0
0
0
Vindex
PON Triplexer Control and
=
Vindex
Mon
2
2
800
0
4
4
0
1
h
4
4
+
80
h
Vindex
Vindex
Vindex
2
2
0
3
3
Monitoring Circuit
3
4
4
Vindex
Vindex
Vindex
2
2
1
2
2
2
3
3
Vindex
Vindex
Vindex
2
2
0
1
1
1
2
2
Vindex
Vindex
Vindex
bit0
bit0
bit0
2
2
1
0
0
0
1
1
47
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