- 您现在的位置：买卖IC网 > PDF目录171225 > DS1862AB+ (MAXIM INTEGRATED PRODUCTS INC) SPECIALTY CONSUMER CIRCUIT, PBGA25 PDF资料下载
参数资料
| 型号： | DS1862AB+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA25 |
| 封装： | 5 X 5 MM, ROHS COMPLIANT, CSBGA-25 |
| 文件页数： | 31/42页 |
| 文件大小： | 586K |
| 代理商： | DS1862AB+ |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页当前第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页
DS1862A
XFP Laser Control and Digital Diagnostic IC
______________________________________________________________________________________
37
Bit write: Transitions of SDA must occur during the low
state of SCL. The data on SDA must remain valid and
unchanged during the entire high pulse of SCL plus the
setup and hold time requirements (Figure 14). Data is
shifted into the device during the rising edge of the SCL.
Bit read: At the end of a write operation, the master
must release the SDA bus line for the proper amount of
setup time (Figure 14) before the next rising edge of
SCL during a bit read. The device shifts out each bit of
data on SDA at the falling edge of the previous SCL
pulse and the data bit is valid at the rising edge of the
current SCL pulse. Remember that the master gener-
ates all SCL clock pulses including when it is reading
bits from the slave.
Acknowledgement (ACK and NACK): An Acknowl-
edgement (ACK) or Not Acknowledge (NACK) is always
the 9th bit transmitted during a byte transfer. The device
receiving data (the master during a read or the slave dur-
ing a write operation) performs an ACK by transmitting a
zero during the 9th bit. A device performs a NACK by
transmitting a one during the 9th bit. Timing (Figure 14)
for the ACK and NACK is identical to all other bit writes.
An ACK is the acknowledgment that the device is prop-
erly receiving data. A NACK is used to terminate a read
sequence or as an indication that the device is not
receiving data.
Byte write: A byte write consists of 8 bits of information
transferred from the master to the slave (most signifi-
cant bit first) plus a 1-bit acknowledgement from the
slave to the master. The 8 bits transmitted by the mas-
ter are done according to the bit write definition and the
acknowledgement is read using the bit read definition.
Byte read: A byte read is an 8-bit information transfer
from the slave to the master plus a 1-bit ACK or NACK
from the master to the slave. The 8 bits of information
that are transferred (most significant bit first) from the
slave to the master are read by the master using the bit
read definition, and the master transmits an ACK using
the bit write definition to receive additional data bytes.
The master must NACK the last byte read to terminate
communication so the slave returns control of SDA to
the master.
Slave address byte: Each slave on the I2C bus
responds to a slave addressing byte sent immediately
following a START condition. The slave address byte
contains the slave address in the most significant 7 bits
and the R/W bit in the least significant bit.
The DS1862A’s slave address is 1010000Xb. The
MOD-DESEL pin is used as a chip select, and allows
the device to respond or ignore I2C communication that
has A0h as the device address. By writing the correct
slave address with R/W = 0, the master indicates it will
write data to the slave. If R/W = 1, the master will read
data from the slave. If an incorrect slave address is
written, the DS1862A assumes the master is communi-
cating with another I2C device and ignores the commu-
nications until the next START condition is sent.
Memory address: During an I2C write operation, the
master must transmit a memory address to identify the
memory location where the slave is to store the data.
SDA
SCL
tHD:STA
tLOW
tHIGH
tR
tF
tBUF
tHD:DAT
tSU:DAT
REPEATED
START
tSU:STA
tHD:STA
tSU:STO
tSP
STOP
START
NOTE: TIMING IS REFERENCED TO VIL(MAX) AND VIH(MIN).
Figure 14. I2C Timing Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| DS1862AB+T&R | SPECIALTY CONSUMER CIRCUIT, PBGA25 |
| DS1868-100-IND | 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDIP14 |
| DS2-320-2AR | DIP20, IC SOCKET |
| DS1-314-1AR | DIP14, IC SOCKET |
| DS3-328-1AR | DIP28, IC SOCKET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1862AB+ | 功能描述:激光驱动器 XFP Laser Control & Digital Diagnostic RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| DS1862AB+T&R | 制造商:Maxim Integrated Products 功能描述:XFP LASER CONTROL 25CSBGA - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LASR CTRLR 7CHAN 5.5V 25CSBGA |
| DS1862AB+T&R | 功能描述:激光驱动器 XFP Laser Control & Digital Diagnostic RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| DS1862AB+TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:XFP Laser Control and Digital Diagnostic IC |
| DS1862B | 功能描述:激光驱动器 RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。