参数资料
型号: DS1877T+T&R
厂商: Maxim Integrated Products
文件页数: 39/65页
文件大小: 0K
描述: IC CTLR/MON SFP 1-2CH 28TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: SFP+ 控制器
输入类型: 逻辑
输出类型: 逻辑
接口: I²C
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)
其它名称: 90-1877T+TRL
44
Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h, Register 81h: TEMPERATURE INDEX (TINDEX)
Table 02h, Register 82h
–85h: RESERVED
Table 02h, Register 86h: DEVICE ID
FACTORY DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS
(PW2 and AEN = 0) or (PW1 and RWTBL2 and AEN = 0)
A2h AND B2h MEMORY
Common A2h and B2h memory locations
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 Table 04h. 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 (2NC), the index used during the lookup function for each table is as follows:
Table 04h (DAC)
1
TINDEX6
TINDEX5
TINDEX4
TINDEX3
TINDEX2
TINDEX1
TINDEX0
For the 8-position LUT tables, the following table shows the lookup function:
TINDEX
1000_0xxx
1001_0xxx
1001_1xxx
1010_0xxx
1010_1xxx
1011_0xxx
1011_1xxx
11xx_xxxx
BYTE
F8
F9
FA
FB
FC
FD
FE
FF
TEMP (NC)
< -8
-8 to +8
+8 to +24
+24 to +40
+40 to +56
+56 to +72
+72 to +88
R
+88
FACTORY DEFAULT
00h
READ ACCESS
N/A
WRITE ACCESS
N/A
A2h AND B2h MEMORY
N/A
MEMORY TYPE
N/A
These registers are reserved.
FACTORY DEFAULT
77h
READ ACCESS
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS
N/A
MEMORY TYPE
ROM
86h
0
1
0
1
BIT 7
BIT 0
Hardwired connections to show the device ID.
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