Rainbow Electronics DS1874 - Manual (Page 33)

Table 04h Register Map
DS1874
SFP+ Controller with Digital LDD Interface
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TABLE 04h (MODULATION LUT)
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–C7 <8> LUT4 MOD MOD MOD MOD MOD MOD MOD MOD
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
DS1874
hardware
PW2 +
mode
bit
All All PW1 PW2 PW2 N/A PW1
Table 05h Register Map
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 89h). In this case Table 01h is empty.
TABLE 05h
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–F7 EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
F8
<8> ALARM
ENABLE
ALARM
EN 3
ALARM
EN 2
ALARM
EN 1
ALARM
EN 0
WARN EN 3 WARN EN 2 RESERVED RESERVED
Table 06h Register Map
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h–C1h).
TABLE 06h (APC LUT)
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
80–9F <8> LUT6 APC REF APC REF APC REF APC REF APC REF APC REF APC REF APC REF
A0 <8> LUT6 APC REF APC REF APC REF APC REF RESERVED RESERVED RESERVED RESERVED