- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384545 > ISPPAC-POWR6AT6-01NN32I (LATTICE SEMICONDUCTOR CORP) In-System Programmable Power Supply Monitoring and Margining Controller PDF資料下載
參數(shù)資料
| 型號： | ISPPAC-POWR6AT6-01NN32I |
| 廠商： | LATTICE SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | In-System Programmable Power Supply Monitoring and Margining Controller |
| 中文描述： | 6-CHANNEL POWER SUPPLY SUPPORT CKT, QCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, QFN-32 |
| 文件頁數(shù)： | 24/34頁 |
| 文件大?。?/td> | 906K |
| 代理商： | ISPPAC-POWR6AT6-01NN32I |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當(dāng)前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁
Lattice Semiconductor
ispPAC-POWR6AT6 Data Sheet
24
Finally, the individual lock status inputs all meet at a common NAND gate. A trim lock condition is generated when
all six trim status inputs are high causing the CLTLOCK/SMBA pin to go low. If the trim lock is lost for any monitored
trim output pin, the CLTLOCK/SMBA pin will de-assert (go open). This could be due to a failed power supply for
example, or if the ispPAC-POWR6AT6 can no longer adjust a controlled supply to specification. Interrogation of the
I
2
C register determines which trim output pin lost lock. Also, the ADC can be used to measure individual supplies to
further diagnose an underlying fault.
There is an alternative path the CLTLOCK/SMBA signal can take, depending on how the ispPAC-POWR6AT6 has
been configured. Refer to the I
2
C/SMBus control logic box shown in Figure 21. When the alternative output path is
enabled in PAC-Designer, the trim lock result is first sent to the I
2
C/SMBus control logic for processing before going
to the CLTLOCK/SMBA output pin. The purpose of this control logic is to make the CLTLOCK/SMBA signal work in
accordance with the SMBus Alert protocol. The main difference between the two output path alternatives is that
SMBus Alert stays set (low) until acknowledged by the host I
2
C processor. Also, an SMBus Alert is set (pulled low)
when a trim lock condition is achieved, as well as when it is lost. Either condition must be acknowledged or the
SMBus Alert condition will not go away. Note that on initial device power-on, or after an I
2
C software reset, an
SMBus Alert is blocked (no trim lock). The SMBus master must explicitly set the CLT_LOCK_STATUS bit-6 low to
begin the SMBAlert process.
SMBus SMBAlert Function
The ispPAC-POWR6AT6 provides an SMBus SMBAlert function to request service from the bus master when used
as part of an SMBus system. When the SMBAlert signal mode for closed-loop trimming is chosen in PAC-Designer,
the CLTLOCK/SMBA output pin will go low whenever the trim lock condition status changes. The reason for this is
to report both when all outputs are in trim lock and when one or more trim output pins lose trim lock.
When a selected (unmasked) closed-loop trim output loses its locked status, servicing the resulting SMBus Alert
and interrogating the I
2
C closed-loop trim register will reveal which trim output pin(s) that are involved. After
acknowledgement by the host I
2
C processor, the CLTLOCK/SMBA pin will be de-asserted until another change in
CLTLOCK/SMBA trim status occurs.
After initial device turn-on and power-on reset (POR) is complete, the SMBA bit in the I
2
C register (0x00, bit-6) is
set high or “1”. The SMBAlert function of the ispPAC-POWR6AT6 is effectively suspended until this location has
been overwritten with a low or “0”. The purpose of this is to prevent output to the CLTLOCK/SMBA pin before the
bus master or host processor is ready to process SMBAlerts.
Note that if closed loop trimming is enabled and completes before this action is performed, the initial trim lock indi-
cation (as an SMBAlert) will not occur. If this happens, trim status can still be interrogated, however. Reading the
I
2
C trim status register to see that all trim bits are high (bit-1 to bit-6) is a valid indication that trim lock has been
achieved. Otherwise, the CLTENb pin must be held high until after the I
2
C SMBA bit is written low and then enabled
afterwards to insure detection of the initial trim lock status with an SMBAlert.
After the SMBA bit has been set low, any subsequent change in trim lock status will be reported with an SMBAlert
output to the CLTLOCK/SMBA pin. To process an SMBAlert, the following steps must be performed to service the
alert and resume monitoring for the next change in trim lock status:
The typical flow for an SMBAlert transaction is as follows (Figure 22):
1. I
2
C closed loop trim register SMBA bit is forced to high by internal ispPAC-POWR6AT6 control logic when-
ever the trim lock status changes
2. ispPAC-POWR6AT6 closed-loop trim control logic pulls the CLTLOCK/SMBA pin low
3. Master responds to interrupt from SMBA line
4. Master broadcasts a read operation by sending the SMBus Alert Response Address (ARA, 18h)
5. ispPAC-POWR6AT6 responds to the ARA request by transmitting its device address
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISPPAC10 | In-System Programmable Analog Circuit |
| ISPPAC10-01PI | In-System Programmable Analog Circuit |
| ISPPAC10-01SI | In-System Programmable Analog Circuit |
| ISPPAC20 | In-System Programmable Analog Circuit |
| ISPPAC20-01J | In-System Programmable Analog Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ispPAC-POWR6AT6-01S32I | 功能描述:監(jiān)控電路 Prec Prog Pwr Supply Seq Mon IND RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ispPAC-POWR6AT6-01SN32I | 功能描述:監(jiān)控電路 Prec Prog Pwr Supply Seq Mon Trim IND RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ISPS5E44MFA | 功能描述:CONN PLUG MALE 4POS GOLD IDC 制造商:panduit corp 系列:IndustrialNet? 包裝:散裝 零件狀態(tài):在售 連接器類型:插頭，公引腳 針腳數(shù):4 外殼尺寸 - 插件:M12-4 外殼尺寸，MIL:- 安裝類型:自由懸掛 端接:IDC 緊固類型:有螺紋 朝向:D 侵入防護(hù):IP65/67 - 防塵，耐水，防水 外殼材料，鍍層:鋅鑄件，鍍鎳 觸頭鍍層:金 特性:- 電壓 - 額定:50V 額定電流:4A 觸頭鍍層厚度:- 工作溫度:-25°C ~ 85°C 標(biāo)準(zhǔn)包裝:1 |
| ISPS688FA | 功能描述:8-POSITION, INDUSTRIALNET, RJ45 制造商:panduit corp 系列:IndustrialNet? 包裝:散裝 零件狀態(tài):在售 連接器類型:插頭 電纜類型:圓形線纜，實(shí)心或絞合導(dǎo)線 針腳/觸頭數(shù):8p8c（RJ45，以太網(wǎng)） 特性:線纜管理 屏蔽:屏蔽 等級:Cat6a 侵入防護(hù):IP20 端接:IDC 長度:2.059"（52.30mm） 顏色:- 線規(guī):22-27 AWG 觸頭鍍層:金 觸頭鍍層厚度:31.5μin（0.80μm） 觸頭材料:磷青銅 外殼材料:聚碳酸脂（PC） 屏蔽材料:黃銅 標(biāo)準(zhǔn)包裝:1 |
| ISPS688FAS | 功能描述:8-POSITION, INDUSTRIALNET, RJ45 制造商:panduit corp 系列:IndustrialNet? 包裝:散裝 零件狀態(tài):在售 連接器類型:插頭 電纜類型:圓形線纜，實(shí)心或絞合導(dǎo)線 針腳/觸頭數(shù):8p8c（RJ45，以太網(wǎng)） 特性:線纜管理 屏蔽:屏蔽 等級:Cat6a 侵入防護(hù):IP20 端接:IDC 長度:2.059"（52.30mm） 顏色:- 線規(guī):22-27 AWG 觸頭鍍層:金 觸頭鍍層厚度:31.5μin（0.80μm） 觸頭材料:磷青銅 外殼材料:聚碳酸脂（PC） 屏蔽材料:黃銅 標(biāo)準(zhǔn)包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。