Micrel M9999-101204 50 October 2004 USER Password (USRPW) D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0] Read/write Default Value
參數(shù)資料
型號： MIC3000BML
廠商： Micrel Inc
文件頁數(shù)： 46/58頁
文件大?。?/td> 0K
描述： IC TXRX OPTICAL MANAGEMENT 24MLF
標準包裝： 75
類型： 收發(fā)器
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤，24-MLF?
供應(yīng)商設(shè)備封裝： 24-MLF?（4x4）
包裝： 托盤
MIC3000
Micrel
M9999-101204
50
October 2004
USER Password (USRPW)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
Read/write
Default Value
0000 0000b = 00h
Serial Address
A2h = 1010001b
Byte Address
251 = FBh
USER passwords are entered in this field. This field is compared to the USRPWSET field at serial address A2h, byte
250. If the two fields match, access is allowed to the USER areas of the MIC3000 non-volatile memory at serial
addresses A0h and A2h. If a valid USER password has not been entered, writes to the serial ID fields and user
scratchpad areas of A0h and A2h will not be allowed and USRPWSET will be unreadable (returns all zeroes).
Power-On Hours MSB (POHh)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read-only
read/write
POH Fault Flag (POHFLT)
Default Value
0000 0000b = 00h
Serial Address
A2h = 1010001b
Byte Address
252 = FCh
The lower seven bits of this register contain the most-significant bits of the 15-bit power-on hours measurement.
POHFLT is an error flag. The value in this register should be combined with the Power-on Hours, Low Byte, POHl, to
yield the complete result. If POHFLT is set, the power-on hour meter data has been corrupted and should be ignored.
It is recommended that a two-byte (or more) sequential read operation be performed on POHh and POHl to insure
coherency between the two registers. This register is non-volatile and will be maintained through power and reset
cycle.
Bit(s)
Function
Operation
D[7]
Power-on hours fault flag
1 = fault; 0 = no fault.
D[6:0]
Power-on hours, high byte
Non-volatile.
Power-On Hours LSB (POHl)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
read/write
POH Fault Flag (POHFLT)
Default Value
0000 0000b = 00h
Serial Address
A2h = 1010001b
Byte Address
253 = FDh
This register contains the least-significant eight bits of the 15-bit power-on hours measurement. The value in this
register should be combined with the Power-on Hours, High Byte, POHh, to yield the complete result. If POHFLT is
set, the power-on hour meter data has been corrupted and should be ignored. It is recommended that a two-byte (or
more) sequential read operation be performed on POHh and POHl to insure coherency between the two registers. This
register is non-volatile and will be maintained through power and reset cycles.
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