参数资料
型号: DS1875T+T&R
厂商: Maxim Integrated Products
文件页数: 91/92页
文件大小: 0K
描述: IC SFP CTRLR/TRIPLEXER 38-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
应用: 光纤
接口: I²C
电源电压: 2.85 V ~ 3.9 V
封装/外壳: 38-WFQFN 裸露焊盘
供应商设备封装: 38-TQFN(5x7)
包装: 带卷 (TR)
安装类型: 表面贴装
DS1875
PON Triplexer and SFP Controller
______________________________________________________________________________________
91
FACTORY DEFAULT
00h
READ ACCESS
All
WRITE ACCESS
All
MEMORY TYPE
Nonvolatile (EE)
80h to C7h
27
26
25
24
23
22
21
20
BIT 7
BIT 0
The BIAS OPEN-LOOP LUT is a set of registers assigned to hold the temperature profile for the BIAS OL DAC.
The values in this table determine the set point for the BIAS current. The temperature measurement is used to
index the LUT (TINDEX, Table 02h, Register 81h) in 2°C increments from -40°C to +102°C, starting at 80h in
Table 08h. Register 80h defines the -40°C to -38°C BIAS OL output, Register 81h defines the -38°C to -36°C
BIAS OL output, and so on. Values recalled from this EEPROM memory table are written into the BIAS OL (Table
02h, Register FDh) location that holds the value until the next temperature conversion. The DS1875 can be
placed into a manual mode (BIAS EN bit, Table 02h, Register 80h), where BIAS OL DAC is directly controlled for
calibration. If the temperature compensation functionality is not required, then program the entire Table 08h to
the desired BIAS OL setting.
Auxiliary Memory A0h Register Descriptions
Auxiliary Memory A0h, Register 00h to FFh: EEPROM
FACTORY DEFAULT
00h
READ ACCESS
ALL
WRITE ACCESS
ALL
MEMORY TYPE
Nonvolatile (EE)
80h to FFh
27
26
25
24
23
22
21
20
BIT 7
BIT 0
Accessible with the slave address A0h.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
38 TQFN-EP
T3857+1
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
Table 08h Register Descriptions
Table 08h, Register 80h to C7h: BIAS OPEN-LOOP LUT
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