Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
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Table 01h Register Map
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 89h). If the row is configured to exist in Table 05h, then 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).
TABLE 01h
WORD 0 WORD 1 WORD 2 WORD 3
ROW
(HEX)
ROW
NAME
BYTE 0/8 BYTE 1/9 BYTE 2/A BYTE 3/B BYTE 4/C BYTE 5/D BYTE 6/E BYTE 7/F
80–BF
<7>
EEPROM EE EE EE EE EE EE EE EE
C0–F7
<8>
EEPROM EE EE EE EE EE EE EE EE
F8
<8>
ALARM
ENABLE
ALARM
EN
3
ALARM
EN
2
ALARM
EN
1
ALARM
EN
0
WARN EN
3
WARN EN
2
RESERVED RESERVED
ACCESS
CODE
<0> <1> <2> <3> <4> <5> <6> <7> <8> <9> <10> <11>
Read
Access
All All All PW2 All N/A PW1 PW2 N/A PW2 All
Write
Access
See each
bit/byte
separately
PW2 N/A
All and
device
hardware
PW2 +
mode
bit
All All PW1 PW2 PW2 N/A PW1