DS1877T+ Maxim Integrated Products, DS1877T+ Datasheet - Page 28

• Manufacturer Part Number: DS1877T+
• Description: IC CTLR/MON SFP 1-2CH 28TQFN
• Manufacturer: Maxim Integrated Products
• Type: SFP+ Controllerr

Specifications of DS1877T+

• Input Type: Logic
• Output Type: Logic
• Interface: I²C
• Current - Supply: 2.5mA
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1877T+000

SFP Controller for Dual Rx Interface
<C> or <_/C> = Common, <D> or <_/D> = Different, <M> or <_/M> = Mixture of common and different.
Note: Table 05h is empty by default. It can be configured to contain the alarm and warning enable bytes from Table 01h,
Registers F8h−FFh with the MASK bit enabled (Table 02h, Register 88h). In this case Table 01h is empty.
<C> or <_/C> = Common, <D> or <_/D> = Different, <M> or <_/M> = Mixture of common and different.
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h−C1h).
These registers also allow for custom permissions.
28
ACCESS
Read
Access
Write
Access
(HEX)
80–F7
F8–FF
(HEX)
00–FF
ROW
ROW
CODE
<7/M>
ROW NAME
ROW NAME
<5>
ALARM ENABLE
separately
EMPTY
See each
AUX EE
bit/byte
<0/_>
<D>
<1/_>
PW2
All
BYTE 0/8
BYTE 0/8
ALARM EN 3
EMPTY
EE
WORD 0
WORD 0
<2/_>
N/A
All
<M>
BYTE 1/9
BYTE 1/9
ALARM EN 2
EMPTY
EE
hardware
DS1877
All and
<3/_>
All
RESERVED
BYTE 2/A
BYTE 2/A
EMPTY
PW2 +
AUXILIARY MEMORY (A0h)
<4/_>
mode
PW2
EE
bit
WORD 1
WORD 1
TABLE 05h
<D>
<5/_>
All
All
BYTE 3/B
BYTE 3/B
ALARM EN 0
EMPTY
EE
<6/_>
N/A
All
<M>
Auxiliary Memory A0h Register Map
BYTE 4/C
BYTE 4/C
EMPTY
WARN EN 3
EE
<7/_>
PW1
PW1
WORD 2
WORD 2
RESERVED
BYTE 5/D
BYTE 5/D
<8/_>
PW2
PW2
EMPTY
EE
Table 05h Register Map
<9/_>
PW2
N/A
RESERVED
BYTE 6/E
BYTE 6/E
EMPTY
EE
<10/_>
PW2
WORD 3
WORD 3
N/A
RESERVED
BYTE 7/F
BYTE 7/F
EMPTY
<11/_>
EE
PW1
All