参数资料
型号: MAX5965BUAX+T
厂商: Maxim Integrated
文件页数: 33/54页
文件大小: 1334K
描述: IC PSE CTRLR FOR POE 36SSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
类型: 以太网供电控制器(PoE)
应用: IP 电话,LAN 网络供电,网络路由器和交换机
内部开关:
电源电压: 2.4 V ~ 3.6 V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-BSOP(0.295",7.50mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
______________________________________________________________________________________   33
PGOOD_ is set to 1 (Table 14) at the end of the power-
up startup period if the power-good condition is met (0
< (V
OUT_
- V
EE
) < PG
TH
). The power-good condition
must remain valid for more than t
PGOOD
to assert
PGOOD_. PGOOD_ is reset to 0 whenever the output
falls out of the power-good condition. A fault condition
immediately forces PGOOD_ low.
PWR_EN_ is set to 1 when the port power is turned on.
PWR_EN_ resets to 0 as soon as the port turns off. Any
transition of PGOOD_ and PWR_EN_ bits set the corre-
sponding bit in the power event registers R02h/R03h
(Table 8). A reset sets R10h = 00h.
Table 14. Power Status Register
ADDRESS = 10h
SYMBOL
BIT
R/W
DESCRIPTION
PGOOD4
7
R
Power-good condition on port 4
PGOOD3
6
R
Power-good condition on port 3
PGOOD2
5
R
Power-good condition on port 2
PGOOD1
4
R
Power-good condition on port 1
PWR_EN4
3
R
Power is enabled on port 4
PWR_EN3
2
R
Power is enabled on port 3
PWR_EN2
1
R
Power is enabled on port 2
PWR_EN1
0
R
Power is enabled on port 1
Table 15. Address Input Status Register
ADDRESS = 11h
SYMBOL
BIT
R/W
DESCRIPTION
Reserved
7
R
Reserved
Reserved
6
R
Reserved
A3
5
R
Device address, A3 pin latched-in status
A2
4
R
Device address, A2 pin latched-in status
A1
3
R
Device address, A1 pin latched-in status
A0
2
R
Device address, A0 pin latched-in status
MIDSPAN
1
R
MIDSPAN inputs latched-in status
AUTO
0
R
AUTO inputs latched-in status
A3, A2, A1, A0 (Table 15) represent the 4 LSBs of the
MAX5965A/MAX5965B address (Table 4). During a
reset, the device latches into R11h. These 4 bits
address from the corresponding inputs as well as the
state of the MIDSPAN and AUTO inputs. Changes to
those inputs during normal operation are ignored.
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