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參數(shù)資料
| 型號： | MAX6618AUB+TG11 |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 17/17頁 |
| 文件大小： | 0K |
| 描述： | IC TRANSLATOR PECI-I2C 10-MSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 邏輯功能： | 變換器 |
| 位數(shù)： | 1 |
| 輸入類型： | PECL |
| 輸出類型： | I²C? |
| 通道數(shù)： | 1 |
| 輸出/通道數(shù)目： | 1 |
| 差分 - 輸入:輸出： | 無/無 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -20°C ~ 120°C |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-µMAX |
| 包裝： | 帶卷 (TR) |
MAX6618
PECI-to-I2C Translator
9
Maxim Integrated
Alternate Temperature Value Representation
This optional feature can be enabled using bit 6 of
CONFIG0. When the alternate data format is enabled, the
temperature value is shifted right as shown in Table 9. The
most significant bits are set to all 0s or all 1s depending on
the sign bit 15, also shown as S in Figure 3. Table 10
shows some example values. This translation is not per-
formed for error codes (16-bit values from 8000h
through 81FFh).
Excluding error codes, the software only has to exam-
ine the RESLO data byte, as it represents an integer
value in the range from -128°C to +127°C in 1°C steps.
The RESHI byte is all 0s or all 1s for valid return codes,
and either 80h or 81h for all error codes.
Temperature Averaging
The MAX6618 can average several temperature read-
ings and return a value as calculated by:
where TOLD is the previously stored temperature, TPECI
is the new value read from PECI, and TNEW is the newly
stored temperature ready to be returned through I2C.
This calculation can cause significant bits to be lost.
Enable temperature averaging by writing the desired
averaging amount to the CONFIG3 register. Writing 00h
to the CONFIG3 register disables temperature averaging.
Tx T
NEW
CONFIG
PECI
CONFIG
=+
1
2
1
2
33
xTOLD
S
X
12
11
10
9
8
7
6
X
S
12
11
10
9
8
7
6
INTEGER VALUE (~ 1
°C)
(SIGN BITS)
RESHI
RESLO
FRACTIONAL VALUE
Figure 3. Alternate Temperature Representation
DESCRIPTION
RESHI
RESLO
16-bit value
15:14:13:12:11:10:9:8
7:6:5:4:3:2:1:0
Alternate
representation
15:15:15:15:15:15:15:15
15:12:11:10:9:8:7:6
Table 9. Alternate Temperature
Representation
BINARY
TEMP (°C)
RELATIVE TEMP (°C)
HEX
RESHI
RESLO
+94
-1
FFFFh
1111 1111
+85
-10
FFF6h
1111 1111
1111 0110
+70
-25
FFE7h
1111 1111
1110 0111
+45
-50
FFCEh
1111 1111
1100 1110
+20
-75
FFB5h
1111 1111
1011 0101
Table 10. Example of Alternate Representation with No Offset (Activation Point = +95°C)
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