參數(shù)資料
型號(hào): DS1878T+T&R
廠商: Maxim Integrated Products
文件頁數(shù): 60/101頁
文件大小: 0K
描述: IC CTLR SFP W/DGTL LDD RX 28TQFN
標(biāo)準(zhǔn)包裝: 2,500
類型: SFP+ 控制器
輸入類型: 模擬,數(shù)字
輸出類型: 數(shù)字
接口: I²C,LDD,串行
電流 - 電源: 2.5mA
安裝類型: 表面貼裝
封裝/外殼: 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-TQFN-EP(5x5)
包裝: 帶卷 (TR)
DS1878
SFP+ Controller with Digital LDD Interface
______________________________________________________________________________________
61
Table 02h, Register 81h: TEMPERATURE INDEX (TINDEX)
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
(PW2 and AEN = 0) or (PW1 and RWTBL246 and AEN = 0)
MEMORY TYPE
Volatile
81h
27
26
25
24
23
22
21
20
BIT 7
BIT 0
Holds the calculated index based on the temperature measurement. This index is used for the address during
lookup of Tables 04h, 06h–08h. Temperature measurements below -40°C or above +102°C are clamped to 80h and
C7h, respectively. The calculation of TINDEX is as follows:
TINDEX
=
Temp _ Value
+ 40°C
2
°C
+ 80h
For the temperature-indexed LUTs, the index used during the lookup function for each table is as follows:
Table 04h (MOD)
1
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
TINDEX0
Table 06h (APC)
1
0
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
Table 07h (DAC1)
1
0
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
Table 08h (DAC2)
1
0
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
FACTORY DEFAULT
0000h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
(PW2 and MOD EN = 0) or (PW1 and RWTBL246 and MOD EN = 0)
MEMORY TYPE
Volatile
82h
0
28
83h
27
26
25
24
23
22
21
20
BIT 7
BIT 0
The digital value used for MODULATION and recalled from Table 04h at the adjusted memory address found in
TINDEX. This register is updated at the end of the temperature conversion.
Table 02h, Register 82h–83h: MODULATION REGISTER
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