参数资料
型号: DS1878T+T&R
厂商: Maxim Integrated Products
文件页数: 100/101页
文件大小: 0K
描述: IC CTLR SFP W/DGTL LDD RX 28TQFN
标准包装: 2,500
类型: SFP+ 控制器
输入类型: 模拟,数字
输出类型: 数字
接口: I²C,LDD,串行
电流 - 电源: 2.5mA
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-TQFN-EP(5x5)
包装: 带卷 (TR)
DS1878
SFP+ Controller with Digital LDD Interface
98
______________________________________________________________________________________
Table 07h Register Descriptions
Table 07h, Register 80h–A3h: DAC1 LUT
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL78) and (PW1 and RTBL78)
WRITE ACCESS
PW2 or (PW1 and RWTBL78)
MEMORY TYPE
Nonvolatile (EE)
80h–A3h
27
26
25
24
23
22
21
20
BIT 7
BIT 0
The DAC1 LUT is a set of registers assigned to hold the PWM profile for DAC1. The values in this table
determine the set point for DAC1. The temperature measurement is used to index the LUT (TINDEX, Table 02h,
Register 81h) in 4°C increments from -40°C to +100°C, starting at Register 80h. Register 80h defines the -40°C
to -36°C DAC1 value, Register 81h defines -36°C to -32°C DAC1 value, and so on. Values recalled from this
EEPROM memory table are written into the DAC1 VALUE (Table 02h, Registers 84h–85h) location, which holds
the value until the next temperature conversion. The part can be placed into a manual mode (DAC1 EN bit, Table
02h, Register 80h), where DAC1 can be directly controlled for calibration. If temperature compensation is not
required by the application, program the entire LUT to the desired DAC1 set point. The DAC1TC bit determines
whether the 8-bit LUT values are loaded into the upper 8 bits or lower 8 bits of the 9-bit DAC1. See the Delta-
Sigma Outputs (DAC1 and DAC2) section for more information.
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL78) or (PW1 and RTBL78)
WRITE ACCESS
PW2 or (PW1 and RWTBL78)
MEMORY TYPE
Nonvolatile (EE)
These registers are reserved.
Table 07h, Register A4h–A7h: RESERVED
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