DS1873T+ Maxim Integrated Products, DS1873T+ Datasheet - Page 70

• Manufacturer Part Number: DS1873T+
• Description: IC CTLR SFP+ ANLG LDD 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Controllerr

Specifications of DS1873T+

• Number Of Channels: 1
• Voltage - Supply: 2.85 V ~ 3.9 V
• Current - Supply: 2.5mA
• Operating Temperature: -40°C ~ 95°C
• Package / Case: 28-WFQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1873T+000

SFP+ Controller with Analog LDD Interface
Table 02h, Register BCh: HTXP
Table 02h, Register BDh: LTXP
70
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BDh
BCh
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
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
MON2
BIT 7
BIT 7
2
2
7
7
, create a TXP HI alarm. The same ranging applied to the APC DAC should be used here.
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 RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Nonvolatile (SEE)
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Nonvolatile (SEE)
2
2
5
5
V
V
HTXP
LTXP
=
=
Full Scale
Full Scale
255
2
255
2
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