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參數(shù)資料
| 型號： | X9525B20I |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Fiber Channel/Gigabit Etherner Laser Diode Control for Fiber Optic Modules |
| 中文描述： | DUAL 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, BGA20 |
| 封裝： | CSP-20 |
| 文件頁數(shù)： | 12/26頁 |
| 文件大?。?/td> | 578K |
| 代理商： | X9525B20I |
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12
FN8210.0
March 10, 2005
CONTROL AND STATUS REGISTER
The Control and Status (CONSTAT) Register provides
the user with a mechanism for changing and reading
the status of various parameters of the X9525 (See Fig-
ure 17).
The CONSTAT register is a combination of both volatile
and nonvolatile bits. The nonvolatile bits of the CON-
STAT register retain their stored values even when Vcc
is powered down, then powered back up. The volatile
bits however, will always power-up to a known logic state
“0” (irrespective of their value at power-down).
A detailed description of the function of each of the CON-
STAT register bits follows:
WEL: Write Enable Latch (Volatile)
The WEL bit controls the Write Enable status of the
entire X9525 device. This bit must first be enabled before
ANY write operation (to DCPs, EEPROM memory array,
or the CONSTAT register). If the WEL bit is not first
enabled, then ANY proceeding (volatile or nonvolatile)
write operation to DCPs, EEPROM array, as well as the
CONSTAT register, is aborted and no ACKNOWLEDGE
is issued after a Data Byte.
The WEL bit is a volatile latch that powers up in the dis-
abled, LOW (0) state. The WEL bit is enabled / set by
writing 00000010 to the CONSTAT register. Once
enabled, the WEL bit remains set to “1” until either it is
reset to “0” (by writing 00000000 to the CONSTAT regis-
ter) or until the X9525 powers down, and then up again.
Writes to the WEL bit do not cause an internal high volt-
age write cycle. Therefore, the device is ready for
another operation immediately after a STOP condition is
executed in the CONSTAT Write command sequence
(See Figure 18).
RWEL: Register Write Enable Latch (Volatile)
The RWEL bit controls the (CONSTAT) Register Write
Enable status of the X9525. Therefore, in order to write
to any of the bits of the CONSTAT Register (except
WEL), the RWEL bit must first be set to “1”. The RWEL
bit is a volatile bit that powers up in the disabled, LOW
(“0”) state.
It must be noted that the RWEL bit can only be set, once
the WEL bit has first been enabled (See "CONSTAT
Register Write Operation").
The RWEL bit will reset itself to the default “0” state, in
one of three cases:
—After a successful write operation to any bits of
the CONSTAT register has been completed (See
Figure 18).
—When the X9525 is powered down.
—When attempting to write to a Block Lock protected
region of the EEPROM memory (See "BL1, BL0: Block
Lock protection bits - (Nonvolatile)", below).
BL1, BL0: Block Lock protection bits - (Nonvolatile)
The Block Lock protection bits (BL1 and BL0) are
used to:
—Inhibit a write operation from being performed to cer-
tain addresses of the EEPROM memory array
—Inhibit a DCP write operation (changing the “wiper
position”).
Bit(s)
CS7 - CS5
BL1 - BL0
RWEL
WEL
CS0
Description
Always “0”(RESERVED)
Sets the Block Lock partition
Register Write Enable Latch bit
Write Enable Latch bit
Always “0” (RESERVED)
0
WEL
0
CS5
CS6
CS7
CS4
CS3
CS2
CS1
CS0
0
0
BL0
BL1
RWEL
Figure 17. CONSTAT Register Format
NV
NV
NOTE: Bits labelled NV are nonvolatile (See “CONTROL AND STATUS REGISTER”).
X9525
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X9525 | Fiber Channel/Gigabit Etherner Laser Diode Control for Fiber Optic Modules |
| X9525V20I | Fiber Channel/Gigabit Etherner Laser Diode Control for Fiber Optic Modules |
| X9530 | Temperature Compensated Laser Diode Controller(帶溫度補(bǔ)償?shù)募す舛O管控制器) |
| X95840 | Quad Digital Controlled Potentiometers |
| X95840WV20I-2.7 | Quad Digital Controlled Potentiometers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9525BZ WAF | 制造商:Intersil Corporation 功能描述: |
| X9525V20I | 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 |
| X9525V20IT1 | 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 |
| X9525V20IZ | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual DCP, EEPROM Memory |
| X9530 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Temperature Compensated Laser Diode Controller |
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