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參數資料
| 型號： | CMCPCI102BR |
| 廠商： | California Micro Devices Corporation |
| 英文描述： | CompactPCI Backplane Interface |
| 中文描述： | CompactPCI背板接口 |
| 文件頁數： | 1/8頁 |
| 文件大?。?/td> | 222K |
| 代理商： | CMCPCI102BR |
2005 California Micro Devices Corp. All rights reserved.
02/28/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
CMCPCI102B
CompactPCI
Backplane Interface
Features
CompactPCI
standards compliant
Allows CompactPCI System Cards to be
used in any Slot
Provides termination for up to ten channels
Provides a series switch in each channel
Supports hot-swap capability
Very low capacitance load on each line
Industrial temperature range
28-pin TSSOP package
Lead-free version available
Applications
Redundant System CompactPCI
cards
Hot-swap CompactPCI cards
Industrial PCs
Telecom/Datacom equipment
Instrumentation
Computer Telephony
Real-time machine control
Product Description
The CMCPCI102BT/BR is a 10-channel backplane
interface/termination IC specifically designed for Com-
pactPCI
redundant
system-slot
CMCPCI102BT/BR allows CompactPCI boards to
interface to the backplane and provides the versatility
to use system cards in any slot (system or peripheral).
Per the CompactPCI specification, the CMCPCI102BT/
BR provides a 10
termination resistor for each chan-
nel to terminate the transmission line stub on the
board. An integral series switch and associated control
signal (SW_EN) permits connection/disconnection of
the channel, so that the device side of the circuit may
be isolated from the backplane side.
cards.
The
The CompactPCI standard requires system boards to
be hot-swappable. To accommodate this requirement,
the CMCPCI102BT/BR features a switched 10k
resis-
tor connected to the 1V Precharge Supply Voltage. If
the precharge enable pin (P_EN) is asserted, then the
10k
pull-up resistors are connected to precharge the
circuits.
In addition, a system board requirement mandates
either a 1.0k
pull-up resistor or a 2.7k
resistor con-
nected to VIO. CompactPCI slot cards must work in
either 3.3V or 5V systems, hence the need for both
2.7k
and 1k
resistors. If the 3_EN pin is logic high,
the 2.7k
resistor is used as the pull-up. If the 5_EN pin
is logic high, the 1k
resistor is used.
The CMCPCI102BT/BR integrates all these functions in
a low-profile 28-pin TSSOP package and is available
with optional lead-free finishing.
Simplified Electrical Schematic
*One of 10 parallel
channels is shown.
1V
5_EN
3_EN
VIO
B1-B10*
A1-A10*
CompactPCI Device Side
Backplane Side
P_EN
SW_EN
For all Enable signals:
Logic 0 = switch open
Logic 1 = switch closed
R
S
10
R
PU1
10k
SW
PU1
SW
PU2
SW
PU3
R
2.7k
R
PU3
1k
SW
S
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PDF描述 |
|---|---|
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| CMCPCI102ATS | COMPACT PCI BACKPLANE INTERFACE |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CMCPCI102BT | 制造商:CALMIRCO 制造商全稱:California Micro Devices Corp 功能描述:CompactPCI Backplane Interface |
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