参数资料
型号: DS1864K
厂商: Maxim Integrated Products
文件页数: 41/72页
文件大小: 0K
描述: KIT EVAL FOR DS1864
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,专用型:激光控制器
已用 IC / 零件: DS1864
SFP Laser Controller and
Diagnostic IC
Lower Memory Register 7Bh to 7Eh: Password Entry Bytes
POWER-ON VALUE:
MEMORY TYPE:
0000 0000h
Volatile (SRAM)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
7Bh
7Ch
7Dh
7Eh
31
2 23
15
7
2 30
2 22
14
6
2 29
2 21
13
5
2 28
2 20
12
4
2 27
2 19
11
3
2 26
2 18
10
2
2 25
2 17
9
1
2 24
2 16
2 8
2 0
bit7
bit0
The password is entered into the four bytes to gain PW1 or PW2 level access. There are two levels of passwords for the DS1864.
The lower level password (PW1) will have access to unprotected areas plus those made available with PW1. The higher level
password (PW2) will have all of the access of PW1 plus those made available with PW2. See the Memory Protection section for
details on password access.
Lower Memory Register 7Fh: Table Select Byte
POWER-ON VALUE:
MEMORY TYPE:
See below
Volatile (SRAM)
7Fh
0
0
0
0
0
2 2
2 1
2 0
bit7
bit0
The upper memory tables of the DS1864 are selected by writing the desired Table value in this register. For example, if Table 04h is
to be selected, the value 04h will be written to register 7Fh. The Power On value of the Table Select Byte is determined by the value
written in Table 04h (Table 01h in DS1859 configuration), register C7h.
Table 01h In Default DS1852 Configuration, (Table 00h in DS1859 Configuration)
Register Descriptions
Table 01h (Table 00h in DS1859 Configuration), 80h to F7h: User Memory
FACTORY DEFAULT:
MEMORY TYPE:
80h to F7h
bit7
This is general use EEPROM.
00h
Nonvolatile (EEPROM)
EEPROM
bit0
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