参数资料
型号: MAX3946ETG+
厂商: Maxim Integrated
文件页数: 17/29页
文件大小: 0K
描述: IC LASER DVR SFP 11.3GBPS 24TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 75
类型: 激光二极管驱动器
数据速率: 11.3Gbps
通道数: 1
电源电压: 2.85 V ~ 3.63 V
电流 - 电源: 68mA
电流 - 调制: 80mA
电流 - 偏置: 80mA
工作温度: -40°C ~ 85°C
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-TQFN-EP(4x4)
包装: 托盘
安装类型: 表面贴装
1Gbps to 11.3Gbps, SFP+ Laser Driver
with Laser Impedance Mismatch Tolerance
WRITE MODE
CSEL
t L
t CH
t T
SCL
0
t CL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
t DS
SDA
A6
A5
A4
A3
A2
A1
A0
RWN
D7
D6
D5
D4
D3
D2
D1
D0
t DH
READ MODE
CSEL
t L
t C H
t CL
t T
SCL
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
t DS
t D
SDA
A6
A5
A4
A3
A2
A1
A0
RWN
D7
D6
D5
D4
D3
D2
D1
D0
t DH
Figure 5. Timing for 3-Wire Digital Interface
Transmitter Control Register (TXCTRL)
Bit #
7
6
5
4
3
2
1
0
ADDRESS
Name
Default Value
X
X
X
X
TXDE_MD[1] TXDE_MD[0]
0 0
TXEQ_EN
0
SOFTRES
0
TX_POL
1
TX_EN
1
H0x05
Bits 5 and 4: TXDE_MD[1:0]. Controls the mode of the transmit output deemphasis circuitry.
00 = deemphasis is fixed at 6.25% of the modulation amplitude
01 = deemphasis is fixed at 3.125% of the modulation amplitude
10 = deemphasis is programmed by the SET_TXDE register setting
11 = deemphasis is at its maximum of approximately 9%
Bit 3: TXEQ_EN. Enables or disables the input equalization circuitry.
0 = disabled
1 = enabled
Bit 2: SOFTRES. Resets all registers to their default values (the DISABLE pin must be at a logic 1 during a write to
SOFTRES for the registers to be set to their default values).
0 = normal
1 = reset
Bit 1: TX_POL. Controls the polarity of the signal path.
0 = inverse
1 = normal
Bit 0: TX_EN. Enables or disables the output circuitry.
0 = disabled
1 = enabled
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17
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