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參數(shù)資料
| 型號(hào)： | S39421 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Hot Swap Voltage Controller |
| 中文描述： | 電壓熱插拔控制器 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 201K |
| 代理商： | S39421 |
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1
SUMMIT MICROELECTRONICS, Inc. 1999
2024 9.0 8/8/00
Characteristics subject to change without notice
SUMMIT
MICROELECTRONICS, Inc.
Hot Swap Voltage Controller
SUMMIT MICROELECTRONICS, Inc. 300 Orchard City Drive, Suite 131 Campbell, CA 95008 Telephone 408-378-6461 Fax 408-378-6586 www.summitmicro.com
FEATURES
Full Voltage Control for Hot Swap Applications
– Card Insertion Detection
– Platform Voltage Detection
– Card Voltage Sequencing
– 5 Volt, 12 Volt and 3.3 Volt
12 Volt FET Enable Outputs
– Allows use of Low On-resistance N-Channel
FETS
Card Reset Generation Based on Out of Spec
Voltages
– Host Reset
Programmable Slew Rate Control [250V/Sec
Default Rate]
Supports 5 Volt, 3.3 Volt and Mixed Voltage
Cards
Integrated 1K Bit E
2
PROM Memory
Data Download Mode [Simplifies
Downloading of Configuration Memory into
Interface ASIC or MCU]
S39421
DESCRIPTION
The S39421 is a fully integrated hot swap controller
intended for use on add-in cards that may be inserted into
or removed from powered-on host platforms. The S39421
performs a variety of tasks starting with the validation of
proper card insertion and the presence of “in-spec” volt-
ages at the host platform interface.
Once power is switched on, the S39421 continues to
monitor the back-end power to the add-in card and the
host power supply. If either the 5V or 3.3V supplies drop
below Vtrip the S39421 will immediately assert the RE-
SET outputs and power-down the add-in card.
In addition to the power control for the add-in card, the
S39421 provides status signals that can be employed by
the host and for the control of bus interface components.
The on board E
2
PROM can be used as configuration
memory for the individual card or as general purpose
memory. The proprietary DataDownload mode provides
a more direct interface to the E
2
PROM for simplified
access by the add-in card’s controller or ASIC.
FUNCTIONAL BLOCK DIAGRAM
+
-
+
-
EEPROM
Slew Rate
Control
VGATE3
VGATE5
CS
SK
DI
DO
CARD_3V
CARD_5V
+
-
+
-
ISLEW
PND1
PND2
DRVREN
SGNL_VLD
RESET
RESET
VCC5
VCC3
HST_PWR
VSEL
VCC12
DD
Filter
RESET
Sequencing
Logic
HST_RST
2024 ILL2.1
CARD_V_VLD
ASSOCIATE
MEMBER
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