- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16175 > DS1865K (Maxim Integrated Products)KIT EVAL FOR DS1865 PDF資料下載
參數(shù)資料
| 型號： | DS1865K |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/67頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVAL FOR DS1865 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 主要目的： | 電信，無源光學(xué)網(wǎng)絡(luò)（PON） |
| 已用 IC / 零件： | DS1865 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁
DS1865
PON Triplexer Control and
Monitoring Circuit
20
____________________________________________________________________
I2C Communication
Writing a Single Byte to a Slave: The master must
generate a START condition, write the I2C slave address
byte (R/W = 0), write the byte of data, and generate a
STOP condition. The master must read the slave’s
acknowledgement during all byte write operations.
Writing Multiple Bytes to a Slave: To write multiple
bytes to a slave, the master generates a START condi-
tion, writes the slave address byte (R/W = 0), writes the
memory address, writes up to 8 data bytes, and gener-
ates a STOP condition. The DS1865 writes 1 to 8 bytes
(1 page or row) with a single write transaction. This is
internally controlled by an address counter that allows
data to be written to consecutive addresses without
transmitting a memory address before each data byte is
sent. The address counter limits the write to one 8-byte
page (one row of the memory map). Attempts to write to
additional pages of memory without sending a STOP
condition between pages result in the address counter
wrapping around to the beginning of the present row.
Example: A 3-byte write starts at address 06h and
writes three data bytes (11h, 22h, and 33h) to three
“consecutive” addresses. The result is that addresses
06h and 07h contain 11h and 22h, respectively, and
the third data byte, 33h, is written to address 00h.
To prevent address wrapping from occurring, the mas-
ter must send a STOP condition at the end of the page,
then wait for the bus-free or EEPROM-write time to
elapse. Then the master can generate a new START
condition, and write the slave address byte (R/W = 0)
and the first memory address of the next memory row
before continuing to write data.
Acknowledge Polling: Any time an EEPROM location
is written, the DS1865 requires the EEPROM write time
(tW) after the STOP condition to write the contents of
the byte of data to EEPROM. During the EEPROM write
time, the device does not acknowledge its slave
address because it is busy. It is possible to take advan-
tage of that phenomenon by repeatedly addressing the
DS1865, which allows the next page to be written as
soon as the DS1865 is ready to receive the data. The
alternative to acknowledge polling is to wait for a maxi-
mum period of tW to elapse before attempting to write
again to the DS1865.
EEPROM Write Cycles: When EEPROM writes occur
to the memory, the DS1865 writes to all three EEPROM
memory locations, even if only a single byte was modi-
fied. Because all three bytes are written, the bytes that
were not modified during the write transaction are still
subject to a write cycle. This can result in all three bytes
being worn out over time by writing a single byte
repeatedly. The DS1865’s EEPROM write cycles are
specified in the
Nonvolatile Memory Characteristics
table. The specification shown is at the worst-case tem-
perature. It can handle approximately 10 times that
many writes at room temperature. Writing to SRAM-
shadowed EEPROM memory with SEEB = 1 does not
count as an EEPROM write cycle when evaluating the
EEPROM’s estimated lifetime.
SDA
SCL
tHD:STA
tLOW
tHIGH
tR
tF
tHD:DAT
tSU:DAT
REPEATED
START
tSU:STA
tHD:STA
tSU:STO
tSP
STOP
START
tBUF
NOTE: TIMING IS REFERENCED TO VIL(MAX) AND VIH(MIN).
Figure 9. I2C Timing Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EBM24DRKF | CONN EDGECARD 48POS DIP .156 SLD |
| M1GXK-3436R | IDC CABLE - MCS34K/MC34M/X |
| HSM06DRKH | CONN EDGECARD 12POS DIP .156 SLD |
| 380LX681M400A052 | CAP ALUM 680UF 400V 20% SNAP |
| EBM25DREI | CONN EDGECARD 50POS .156 EYELET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1865T TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:PON Triplexer Control and Monitoring Circuit |
| DS1865T+ | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 PON Triplexer Cntrl & Monitoring Circuit RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| DS1865T+T&R | 制造商:Maxim Integrated Products 功能描述:TRIPLEXER CONTROL AND MONITORING CIRCUIT 1TX 1RX 1.25GBPS 28 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC PON CONTROL TRI 28-TQFN 制造商:Maxim Integrated Products 功能描述:Current & Power Monitors & Regulators PON Triplexer Cntrl & Monitoring Circuit |
| DS1865T+T&R | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 PON Triplexer Cntrl & Monitoring Circuit RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| DS1865T+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:PON Triplexer Control and Monitoring Circuit |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。