ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 73
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ds1878
Manufacturer Part Number
ds1878
Description
Sfp+ Controller With Digital Ldd Interface
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS1878.pdf
(98 pages)
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Table 02h, Register BCh: HTXP
Table 02h, Register BDh: LTXP
BCh
BDh
SFP+ Controller with Digital LDD Interface
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Fast-comparison DAC threshold adjust for high TXP. This value is added to the APC DAC value recalled from
Table 06h. If the sum is greater than 0xFF, 0xFF is used. Comparisons greater than V
V
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Fast-comparison DAC threshold adjust for low TXP. This value is subtracted from the APC DAC value recalled
from Table 06h. If the difference is less than 0x00, 0x00 is used. Comparisons less than V
against V
MON2
BIT 7
BIT 7
______________________________________________________________________________________
2
2
7
, create a TXP HI alarm. The same ranging applied to the APC DAC should be used here.
7
MON2
, create a TXP LO alarm. The same ranging applied to the APC DAC should be used here.
2
2
6
6
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
2
2
5
5
V
HTXP
V
LTXP
=
=
Full Scale
Full Scale
255
2
2
255
4
4
(
(
HTXP + APC DAC
APC DAC LTXP
2
2
3
3
)
)
2
2
2
2
HTXP
2
2
1
1
, compared against
LTXP
, compared
BIT 0
BIT 0
2
2
0
0
73
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