DS1864 Maxim Integrated Products, DS1864 Datasheet - Page 61

• Manufacturer Part Number: DS1864
• Description: SFP Laser Controller and Diagnostic IC
• Manufacturer: Maxim Integrated Products

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Table 05h, D1h: PW1 Password Write-Enable Byte
FACTORY DEFAULT:
MEMORY TYPE:
This byte configures the Write protection of PW1. This is discussed in more detail in the Memory Protection and Password section.
D1h
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
bit7
2
7
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers D0h
through D6h in the Main Device memory, Table 05h.
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers F8h
through FFh in the Main Device memory, Table 05h.
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers 80h
through C7h in the Main Device memory, Table 04h (Table 01h in DS1859 configuration), Table 02h,
and Table 03h.
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers F8h
through FFh in the Main Device memory, Table 01h (Table 00h in DS1859 configuration).
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers 80h
through F7h in the Main Device memory, Table 01h (Table 00h in DS1859 configuration).
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers 00h
through 7Ah in the Main Device memory.
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers 80h
through FFh in the Auxiliary Device memory on I
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
When this bit is set, PW1 Write protection is enabled for the memory block consisting of registers 00h
through 7Fh in the Auxiliary Device memory of I
0 = Memory is unprotected (PW1 level).
1 = Memory is protected (PW1 level).
00h
Shadowed Memory (SEE)
2
6
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2
5
SFP Laser Controller and
2
4
2
2
C slave ddress A0h.
C slave address A0h.
2
3
2
Diagnostic IC
2
2
1
bit0
2
0
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