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参数资料
| 型号： | DS1874T+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 25/88页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SFP+ ANLG LDD 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 激光二极管控制器 |
| 通道数： | 1 |
| 电源电压： | 2.85 V ~ 3.9 V |
| 电流 - 电源： | 2.5mA |
| 工作温度： | -40°C ~ 95°C |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
| 其它名称： | 90-1874T+TRL |
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SFP+ Controller with Digital LDD Interface
Initialization
During initialization, the DS1874 transfers all its 3-wire
EEPROM control registers to the MAX3798/MAX3799.
The 3-wire control registers include the following:
? RXCTRL1
? RXCTRL2
? SET_CML
? SET_LOS
? TXCTRL
? IMODMAX
? IBIASMAX
? SET_PWCTRL
? SET_TXDE
The control registers are first written when V CC exceeds
POA. They are also written if the MAX3798/MAX3799
TX_POR bit is set high (visible in 3W TXSTAT1, bit 7). In
the MAX3798/MAX3799, this bit is “sticky” (latches high
and is cleared on a read). They are also updated on a
rising edge of TXD. Any time one of these events
occurs, the DS1874 reads and updates TXSTAT1 and
TXSTAT2 and sets SET_IBIAS and SET_IMOD in the
MAX3798/MAX3799 to 0.
MAX3798/MAX3799 Register Map and DS1874 Corresponding Location
MAX3798/MAX3799 REGISTER FUNCTION
Receiver Control 1
Receiver Control 2
Receiver Status
Output CML Level Setting
LOS Threshold Level Setting
Transmitter Control
Transmitter Status 1
Transmitter Status 2
Bias Current Setting
REGISTER NAME
RXCTRL1
RXCTRL2
RXSTAT
SET_CML
SET_LOS
TXCTRL
TXSTAT1
TXSTAT2
SET_IBIAS/BIAS
DS1874 LOCATION
Table 02h, E8h
Table 02h, E9h
Lower Memory, 6Eh, Bit1
Table 02h, EAh
Table 02h, EBh
Table 02h, ECh
Table 02h, FCh
Table 02h, FDh
Table 02h, CBh –CCh
Modulation Current Setting
SET_IMOD/MODULATION Table 02h, 82h –83h
Maximum Modulation Current Setting
Maximum Bias Current Setting
Modulation Current Increment Setting
Bias Current Increment Setting
Mode Control
Transmitter Pulse-Width Control
Transmitter Deemphasis Control
IMODMAX
IBIASMAX
MODINC
BIASINC
MODECTRL
SET_PWCTRL
SET_TXDE
Table 02h, EDh
Table 02h, EEh
(see Note)
Automatically performed by APC loop. Disable
APC before using 3-wire manual mode. Manual
Mode: Table 02h, F8h–FBh
(see Note)
Table 02h, EFh
Table 02h, F0h
Note: This register is not present in the DS1874. To access this register, use manual operation (see the Manual Operation section).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1875 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:PON Triplexer and SFP Controller |
| DS1875RT+ | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER AND SFP CONTROLLER - Rail/Tube |
| DS1875RT+T&R | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER AND SFP CONTROLLER - Tape and Reel |
| DS1875T+ | 功能描述:ADC / DAC多通道 PON Triplexer & SFP Controller RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| DS1875T+T&R | 制造商:Maxim Integrated Products 功能描述:PON TRIPLEXER 38TQFN EP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC SFP CTRLR/TRIPLEXER 38-TQFN 制造商:Maxim Integrated Products 功能描述:ADC / DAC Multichannel PON Triplexer & SFP Controller |
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