参数资料
型号: MAX5935EAX+
厂商: Maxim Integrated
文件页数: 21/44页
文件大小: 700K
描述: IC CTRLR POWER QUAD 36-SSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 30
类型: 以太网供电控制器(PoE)
应用: 远程外设(工业控制,相机,数据访问)
内部开关:
电源电压: -32 V ~ -60 V
工作温度: -40°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: 管件
Message Format for Writing the MAX5935
A write to the MAX5935 comprises of the MAX5935s
slave address transmission with the R/W bit set to 0, fol-
lowed by at least one byte of information. The first byte
of information is the command byte (Figure 11). The
command byte determines which register of the
MAX5935 is written to by the next byte, if received. If
the MAX5935 detects a STOP condition after receiving
the command byte, then the MAX5935 takes no further
action beyond storing the command byte. Any bytes
received after the command byte are data bytes. The
first data byte goes into the internal register of the
MAX5935 selected by the command byte. If the
MAX5935 transmits multiple data bytes before the
MAX5935 detects a STOP condition, these bytes store
in subsequent MAX5935 internal registers because the
control byte address auto-increments.
Any bytes received after the control byte are data
bytes. The first data byte goes into the internal register
of the MAX5935 selected by the control byte (Figure 8).
If multiple data bytes are transmitted before a STOP
condition is detected, these bytes are stored in subse-
quent MAX5935 internal registers because the control
byte address auto-increments.
Quad Network Power Controller
for Power-Over-LAN
______________________________________________________________________________________   21
Figure 11. Control Byte Received
S
A
A
P
0
SLAVE ADDRESS
CONTROL BYTE
ACKNOWLEDGE FROM MAX5935
ACKNOWLEDGE FROM MAX5935
D15   D14   D13   D12   D11   D10   D9    D8
CONTROL BYTE IS STORED ON RECEIPT OF STOP CONDITION
R/W
Figure 12. Control and Single Data Byte Received
S
A
A
A    P
0
SLAVE ADDRESS
CONTROL BYTE
DATA BYTE
ACKNOWLEDGE FROM MAX5935
1 BYTE
AUTO-INCREMENT
MEMORY WORD ADDRESS
D15  D14  D13  D12  D11  D10   D9   D8
D1   D0
D3   D2
D5   D4
D7   D6
HOW CONTROL BYTE AND DATA BYTE MAP
INTO THE REGISTER
ACKNOWLEDGE FROM MAX5935
ACKNOWLEDGE FROM MAX5935
R/W
Figure 13. n Data Bytes Received
S
A
A
A    P
0
SLAVE ADDRESS
CONTROL BYTE
DATA BYTE
ACKNOWLEDGE FROM MAX5935
n BYTES
AUTO-INCREMENT
MEMORY WORD ADDRESS
D15  D14  D13  D12  D11  D10   D9   D8
D1   D0
D3   D2
D5   D4
D7   D6
HOW CONTROL BYTE AND DATA BYTE MAP
INTO THE REGISTER
ACKNOWLEDGE FROM MAX5935
ACKNOWLEDGE FROM MAX5935
R/W
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