DS1877T+ Maxim Integrated Products, DS1877T+ Datasheet - Page 26

• 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.
<C> or <_/C> = Common, <D> or <_/D> = Different, <M> or <_/M> = Mixture of common and different.
Note: The ALARM ENABLE bytes (Registers F8h−FFh) can be configured to exist in Table 05h instead of here at Table 01h with
the MASK bit (Table 02h, Register 88h). If the row is configured to exist in Table 05h, these locations are empty in Table 01h.
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.
26
80–BF
C0–F7
ACCESS
Read
Access
Write
Access
(HEX)
00–07
08–0F
10–1F
20–27
28–37
38–4F
50–5F
60–67
68–6F
70–77
78–7F
(HEX)
F8–FF
ROW
ROW
CODE
<7/M>
<0/M>
<1/C >
<2/C>
<0/M>
<2/D>
<1/C>
<1/D>
<1/C >
<1/D >
<1/C >
<1/C>
<7/C>
<8/C>
ROW NAME
ROW NAME
ALARM ENABLE
TABLE SELECT
ADC VALUES 0
ADC VALUES 1
ALARM/WARN
THRESHOLD 0
THRESHOLD 4
THRESHOLD 1
separately
See each
bit/byte
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
<0/_>
<C>
<1/_>
PW2
RESERVED
All
BYTE 0/8
BYTE 0/8
ALARM 3
ALARM EN 3
EE
EE
EE
TEMP ALARM HI
<2/D>
RSSI ALARM HI
V CC ALARM HI
TEMP VALUE
WORD 0
RSSI VALUE
WORD 0
<2/_>
N/A
EE
EE
EE
All
<D>
RESERVED
BYTE 1/9
BYTE 1/9
ALARM 2
ALARM EN 2
EE
EE
EE
hardware
DS1877
All and
<3/_>
All
RESERVED
RESERVED
RESERVED
BYTE 2/A
BYTE 2/A
PW2 +
<4/_>
mode
PW2
EE
EE
EE
bit
TEMP ALARM LO
RSSI ALARM LO
V CC ALARM LO
LOWER MEMORY
V CC VALUE
RESERVED
WORD 1
WORD 1
TABLE 01h
EE
EE
EE
<D>
<5/_>
All
All
BYTE 3/B
BYTE 3/B
ALARM 0
ALARM EN 0
EE
EE
EE
<6/C>
<6/_>
PWE MSW
N/A
All
<C>
BYTE 4/C
BYTE 4/C
WARN 3
WARN EN 3
EE
EE
EE
<7/_>
PW1
PW1
TEMP WARN HI
V CC WARN HI
RSSI WARN HI
RESERVED
RESERVED
WORD 2
WORD 2
Lower Memory Register Map
EE
EE
EE
RESERVED
RESERVED
BYTE 5/D
BYTE 5/D
<8/_>
PW2
PW2
EE
EE
EE
Table 01h Register Map
<6/C>
PWE LSW
<9/_>
PW2
N/A
<0/M>
RESERVED
RESERVED
BYTE 6/E
BYTE 6/E
EE
STATUS
EE
EE
TEMP WARN LO
V CC WARN LO
RSSI WARN LO
<10/_>
RESERVED
PW2
WORD 3
WORD 3
N/A
EE
EE
EE
<3/D>
<5/D>
RESERVED
RESERVED
BYTE 7/F
BYTE 7/F
<11/_>
UPDATE
TBL SEL
EE
EE
EE
PW1
All