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參數(shù)資料
| 型號： | MAX5945 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Quad Network Power Controller for Power-Over-LAN |
| 中文描述： | 四路網(wǎng)絡(luò)電源控制器，用于LAN供電 |
| 文件頁數(shù)： | 33/44頁 |
| 文件大?。?/td> | 572K |
| 代理商： | MAX5945 |
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Use TF_PR[3:0] to set the nominal value for t
DISC
according to the following formula:
t
DISC
nominal = 238ms + 16ms x N
where N is the decimal value of the binary words
TF_PR[3:0].
A reset sets R27h = 47h, which sets t
DISC
nominal =
350ms as shown in the
Electrical Characteristics
. Use
R27h in conjunction with the two TDISC[1:0] bits in reg-
ister R16h to program the values of t
DISC
from 60ms to
almost 340ms with a 16ms resolution.
Example: Set TD_PR[3:0] = 1111b, TDISC[1:0] = 11b
Then:
t
DISC
= 2 x t
DISC
nominal
= 2 x (238ms + 16ms x 15)
= 956ms
Note:
The programmed value has the same percent-
age tolerance as the value specified in the
Electrical
Characteristics
.
M
Quad Network Power Controller
for Power-Over-LAN
______________________________________________________________________________________
33
ADDRESS = 23h
SYMBOL
BIT
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DESCRIPTION
IGATE[2]
IGATE[1]
IGATE[0]
Detect bypass protection in AUTO mode
OSC_FAIL Reset Bit
AC_TH[2]
AC_TH[1]
AC_TH[0]
IGATE
DET_BYP
OSCF_RS
AC_TH
Table 27. Program Register 1
ADDRESS = 27h
SYMBOL
BIT
7
6
5
4
3
2
1
0
R/W
R
R
R
R
R
R
R
R
DESCRIPTION
IMAX[3]. V
SU_LIM
programming bit 3.
IMAX[2]. V
SU_LIM
programming bit 2.
IMAX[1]. V
SU_LIM
programming bit 1.
IMAX[0]. V
SU_LIM
programming bit 0.
TD_PR[3]. t
DISC
nominal programming bit 3.
TD_PR [2]. t
DISC
nominal programming bit 2.
TD_PR [1]. t
DISC
nominal programming bit 1.
TD_PR [0]. t
DISC
nominal programming bit 0.
IMAX
TD_PR
Table 28. Program Register 2
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|---|---|
| MAX5945CAX | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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| MAX5945CAX+T | 功能描述:熱插拔功率分布 IEEE 802.3af Quad Net Pwr Controller RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5945CAX-T | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MAX5945EAX | 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
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