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參數(shù)資料
| 型號： | X9523V20I-B |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Laser Diode Control for Fiber Optic Modules |
| 中文描述： | DIGITAL POTENTIOMETER, PDSO20 |
| 封裝： | PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 12/30頁 |
| 文件大小： | 509K |
| 代理商： | X9523V20I-B |
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12
FN8209.0
March 10, 2005
—Write a one byte value to the CONSTAT Register that
has all the bits set to the desired state. The CONSTAT
register can be represented as qxyst01r in binary,
where xy are the Voltage Monitor Output Status
(V2OS and V3OS) bits, t is the DCP Write Lock
(DWLK) bit, and qr are the Power-on Reset delay time
(t
PUV1RO
) control bits (POR1 - POR0). This operation
is proceeded by a START and ended with a STOP bit.
Since this is a nonvolatile write cycle, it will typically
take 5ms to complete. The RWEL bit is reset by this
cycle and the sequence must be repeated to change
the nonvolatile bits again. If bit 2 is set to ‘1’ in this third
step (qxys t11r) then the RWEL bit is set, but the
V2OS, V3OS, POR1, POR0, and DWLK bits remain
unchanged. Writing a second byte to the control regis-
ter is not allowed. Doing so aborts the write operation
and the X9523 does not return an ACKNOWLEDGE.
For example, a sequence of writes to the device CON-
STAT register consisting of [02H, 06H, 02H] will reset all
of the nonvolatile bits in the CONSTAT Register to “0”.
It should be noted that a write to any nonvolatile bit of
CONSTAT register will be ignored if the Write Protect
pin of the X9523 is active (HIGH) (See "WP: Write
Protection Pin").
CONSTAT Register Read Operation
The contents of the CONSTAT Register can be read at
any time by performing a random read (See Figure 14).
Using the Slave Address Byte set to 10100101, and an
Address Byte of FFh. Only one byte is read by each reg-
ister read operation. The X9523 resets itself after the first
byte is read. The master should supply a STOP condition
to be consistent with the bus protocol.
After setting the WEL and / or the RWEL bit(s) to a “1”,
a CONSTAT register read operation may occur, without
interrupting a proceeding CONSTAT register write
operation.
When performing a read operation on the CONSTAT
registerm, bit CS4 will always return a “0” value.
DATA PROTECTION
There are a number of levels of data protection fea-
tures designed into the X9523. Any write to the device
first requires setting of the WEL bit in the CONSTAT
register. A write to the CONSTAT register itself, further
requires the setting of the RWEL bit. DCP Write Lock
protection of the device enables the user to inhibit
writes to all the DCPs. One further level of data protec-
tion in the X9523, is incorporated in the form of the
Write Protection pin.
X9522 Write Permission Status
Figure 14. CONSTAT Register Read Command Sequence
0
Slave
Address
Address
Byte
A
C
K
A
C
K
S
t
a
r
t
S
t
o
p
Slave
Address
Data
A
C
K
1
S
t
a
r
t
SDA Bus
Signals from
the Slave
Signals from
the Master
0 1 0 0 1 0
1
1
0 1 0 0 1 0
WRITE Operation
“Dummy” Write
READ Operation
CS7 … CS0
DWLK
(DCP Write Lock
bit status)
1
0
WP
(Write Protect pin
status)
1
1
0
0
DCP Volatile Write
Permitted
NO
YES
DCP Nonvolatile
Write Permitted
NO
NO
Write to CONSTAT Register
Permitted
Volatile Bits
NO
NO
Nonvolatile Bits
NO
NO
1
NO
NO
YES
YES
0
YES
YES
YES
YES
X9523
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9523V20I-BT1 | 功能描述:IC DCP DUAL EEPROM MEM 20-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 激光驅(qū)動器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:60 系列:- 類型:激光二極管驅(qū)動器 數(shù)據(jù)速率:- 通道數(shù):4 電源電壓:3.3V 電流 - 電源:- 電流 - 調(diào)制:- 電流 - 偏置:- 工作溫度:0°C ~ 70°C 封裝/外殼:40-TQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN EP 包裝:托盤 安裝類型:表面貼裝 |
| X9523V20IZ-A | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Laser Diode Control for Fiber Optic Modules |
| X9523V20IZ-B | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Laser Diode Control for Fiber Optic Modules |
| X9525 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual DCP, EEPROM Memory |
| X9525_06 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual DCP, EEPROM Memory |
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