參數(shù)資料
型號(hào)： DS1878T+T&R
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 22/101頁(yè)
文件大?。?/td> 0K
描述： IC CTLR SFP W/DGTL LDD RX 28TQFN
標(biāo)準(zhǔn)包裝： 2,500
類(lèi)型： SFP+ 控制器
輸入類(lèi)型： 模擬，數(shù)字
輸出類(lèi)型： 數(shù)字
接口： I²C，LDD，串行
電流 - 電源： 2.5mA
安裝類(lèi)型： 表面貼裝
封裝/外殼： 28-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（5x5）
包裝： 帶卷 (TR)
DS1878
SFP+ Controller with Digital LDD Interface
______________________________________________________________________________________
27
CSEL_OUT
SCLOUT
SDAOUT
CSEL_OUT
NOTE: SEE THE 3-WIRE DIGITAL INTERFACE SPECIFICATION TABLE FOR DETAILS. CSEL_OUT IMPLIES CSEL1OUT OR CSEL2OUT.
SCLOUT
SDAOUT
1
2
3
456
78
A6
9
10
11121314
15
0
1
2
3
456
789
10
11
12
13
14
15
0
A5
A4
A3
A2
A1
RWN
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
RWN
WRITE MODE
READ MODE
A0
A6
A5
A4
A3
A2
A1
A0
tL
tCH tCL
tL
tDS
tDH
tDS
tRS
tDH
tT
Figure 18. 3-Wire Timing
3-Wire Interface Timing
Figure 18 shows the 3-wire interface timing. Figure 19
shows the 3-wire state machine. See the
3-Wire Digital
Interface Specification table for more information.
DS1878 Master Communication
Interface
Normal Operation
The majority of the communications consist of bias
adjustments for the APC loop. After each temperature
conversion, the laser modulation setting must be updat-
ed. All registers are rewritten after every temperature
conversion. Status registers TXSTAT1 and TXSTAT2 are
read between temperature updates at a regular inter-
val, tRR (see the Analog Voltage Monitoring
Characteristics table). The results are stored in 3W
TXSTAT1 and 3W TXSTAT2 (Table 02h, FCh–FDh). Two
chip selects are provided: CSEL1OUT and CSEL2OUT.
In the case where a separate limiting amplifier and
laser driver are used, CSEL2OUT should be connected
to the limiting amplifier. CSEL2OUT is only active when
receiver-related registers are accessed. This minimizes
noise caused by the digital interface.
Manual Operation
The master interface is controllable using four registers in
the device: 3WCTRL, ADDRESS, WRITE, and READ.
Commands can be manually issued while the device is
in normal operation mode. It is also possible to suspend
normal 3-wire commands so that only manual operation
commands are sent (3WCTRL, Table 02h, Register F8h).
Initialization
During initialization, the device transfers all its 3-wire
EEPROM control registers to a Maxim laser driver and
limiting amplifier. The 3-wire control registers include
the following:
RXCTRL1
RXCTRL2
SETCML
SETLOS
TXCTRL
IMODMAX
IBIASMAX
SETPWCTL
SETTXDE
SETTXEQ
SETLOSTIMER
RXCTRL3
TXCTRL2
TXCTRL3
相關(guān)PDF資料
PDF描述
DS1881Z-050+T&R IC DGTL POT NV 2CH 45K 16-SOIC
DS1882Z-050+T&R IC POT DIGIT DL LOG 50K 16SOIC
DS1884AT+T IC SFP PON ONU CTRLR 24TQFN
DS2105Z+ IC SCSI TERMINATOR 16-SOIC
DS2106S/T&R IC TERMINATOR SCSI 28-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS-187PU 制造商:Shinagawa Shoko 功能描述:
DS-187U 制造商:Shinagawa Shoko 功能描述:
DS1880E-050 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS1880E-050/T&R 制造商:Maxim Integrated Products 功能描述:DUAL LOG POT + EQUALIZER T&R - Tape and Reel
DS1880E-050/T&R 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*