参数资料
型号: DS1884T+
厂商: Maxim Integrated Products
文件页数: 58/92页
文件大小: 0K
描述: IC SFP PON ONU CTRLR 24TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
产品变化通告: DS1884 Series Discontinuation 03/Aug/2012
标准包装: 28
系列: *
DS1884
SFP and PON ONU Controller
with Digital LDD Interface
61
Maxim Integrated
A2h Table 02h, Register 81h: Temperature Index (TINDEX)
A2h Table 02h, Register 82h–83h: MODULATION VALUE
A2h Table 02h, Register 84h: RESERVED
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RBL246)
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, and 08h. Temperature measurements below -40NC or above +102NC are clamped to 80h and
C7h, respectively. The calculation of TINDEX is as follows:
Temp_Value 40 C
TINDEX
80h
2 C
=
+
°
For the temperature-indexed LUTs, the index used during the lookup function for each table is as follows:
A2h Table 04h
(MOD)
1
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
TINDEX0
A2h Table 06h
(APC)
1
0
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
FACTORY DEFAULT
0000h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RBL246)
WRITE ACCESS
(PW2 and MOD LUT EN = 0) or (PW1 and RWTBL246 and MOD LUT 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 MOD and recalled from A2h Table 04h at the adjusted memory address found in TINDEX.
This register is updated at the end of the temperature conversion.
FACTORY DEFAULT
00h
READ ACCESS
N/A
WRITE ACCESS
N/A
MEMORY TYPE
Nonvolatile (SEE)
This register is reserved.
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