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参数资料
| 型号： | X9520V20I-B |
| 厂商： | Intersil |
| 文件页数： | 9/29页 |
| 文件大小： | 0K |
| 描述： | IC 3 DCP 2K EE LASR CTRL 20TSSOP |
| 标准包装： | 75 |
| 类型： | 激光二极管控制器（光纤） |
| 通道数： | 3 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电流 - 电源： | 1.5mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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X9520
terminal”. Therefore, the Data Byte 00001111 (15 10 )
corresponds to setting the “wiper terminal” to tap position 15.
Similarly, the Data Byte 00011100 (28 10 ) corresponds to
setting the “wiper terminal” to tap position 28. The mapping
of the Data Byte to “wiper position” data for DCP1 (100 Tap),
is shown in “Appendix 1” . An example of a simple C
language function which “translates” between the tap
position (decimal) and the Data Byte (binary) for DCP1, is
given in “Appendix 2” .
It should be noted that all writes to any DCP of the X9520
are random in nature. Therefore, the Data Byte of
consecutive write operations to any DCP can differ by an
arbitrary number of bits. Also, setting the bits P1 = 1, P0 = 1
is a reserved sequence, and will result in no
DCP Read Operation
A read of DCPx (x = 0,1,2) can be performed using the three
byte random read command sequence shown in Figure 10.
The master issues the START condition and the Slave
Address Byte 10101110 which specifies that a “dummy”
write” is to be conducted. This “dummy” write operation sets
which DCP is to be read (in the preceding Read operation).
An ACKNOWLEDGE is returned by the X9520 after the
Slave Address if received correctly. Next, an Instruction Byte
is issued on SDA. Bits P1-P0 of the Instruction Byte
determine which DCP “wiper position” is to be read. In this
case, the state of the WT bit is “don’t care”. If the Instruction
Byte format is valid, then another ACKNOWLEDGE is
returned by the X9520.
ACKNOWLEDGE after sending an Instruction Byte on SDA.
Following this ACKNOWLEDGE, the master immediately
The factory default setting of all “wiper position” settings is
with 00h stored in the NVM of the DCPs. This corresponds
to having the “wiper teminal” R WX (x = 0,1,2) at the “lowest”
tap position, Therefore, the resistance between R WX and
R LX is a minimum (essentially only the Wiper Resistance,
R W ).
issues another START condition and a valid Slave address
byte with the R/W bit set to 1. Then the X9520 issues an
ACKNOWLEDGE followed by Data Byte, and finally, the
master issues a STOP condition. The Data Byte read in this
operation, corresponds to the “wiper position” (value of the
WCR) of the DCP pointed to by bits P1 and P0.
Signals from the
Master
S
t
a
r
t
Slave
Address
WRITE Operation
Instruction
Byte
S
t
a
r
t
Slave
Address
READ Operation
Data Byte
S
t
o
p
W 0 0 0 0 0 P P
SDA Bus
1 0 1 0 1 1 1 0
T 1 0
1 0 1 0 1 1 1 1
Signals from the
Slave
A
C
K
A
C
K
A
C
K
- -
DCPx
x=0
“Dummy” write
-
x=1
MSB
LSB
x=2
“-” = DON’T CARE
FIGURE 10. DCP READ SEQUENCE
S
Signals from the
Master
t
a
r
t
Slave
Address
WRITE Operation
Address
Byte
Data
Byte
S
t
o
p
SDA Bus
1 0 1 0 0 0 0 0
A
A
A
Signals from the
Slave
Internal
Device
C
K
C
K
C
K
Address
FIGURE 11. EEPROM BYTE WRITE SEQUENCE
9
FN8206.2
August 20, 2007
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相关代理商/技术参数 |
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|---|---|
| X9520V20I-BT1 | 功能描述:IC VOLT MON DUAL 2KBIT 20-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 激光驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:激光二极管驱动器 数据速率:- 通道数:4 电源电压:3.3V 电流 - 电源:- 电流 - 调制:- 电流 - 偏置:- 工作温度:0°C ~ 70°C 封装/外壳:40-TQFN 裸露焊盘 供应商设备封装:40-TQFN EP 包装:托盘 安装类型:表面贴装 |
| X9520V20IZ-A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520V20IZ-AT1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520V20IZ-AT2 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
| X9520V20IZ-B | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Triple DCP, POR, 2kbit EEPROM Memory, Dual Voltage Monitors |
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