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PDF EI68C153 Data sheet ( Hoja de datos )

Número de pieza EI68C153
Descripción Bus Interrupter Module (VME)
Fabricantes IMP 
Logotipo IMP Logotipo



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Ei68C153
Bus Interrupter Module (VME)
Semiconductor, Inc.
FEATURES
• Programmable interrupt controller for
VMEbus and VERSAbus ™ systems
• Receives and prioritizes 4 independent
local interrupt sources
• 7 programmable interrupt request levels for
each local interrupt source
• Separate control and vector registers for
each local interrupt source
• Interrupt enable and interrupt clear bits
• Two response modes: Internal (vectored
mode) or external (interrupting device-sup
plies-the-vector mode)
• Interrupt acknowledge daisy chain
• Flag bits with auto-clear capability
• Pin & function compatible with Motorola
MC68153
• Single 5.0 volt power supply
• Advanced CMOS low-power technology
DESCRIPTION
The Bus Interrupter Module (BIM) provides an interface
between interrupting devices and a system bus such as
the VMEbus or VERSAbus™. It generates a maximum
of 7 bus interrupts on the IRQ1-IRQ7 outputs and
responds to interrupt acknowledge cycles for up to 4
independent slaves. The BIM can also supply an inter-
rupt vector during an interrupt acknowledge cycle.
Moreover, it sits in the interrupt acknowledge daisy-
chain which allows for multiple interrupts on the level
acknowledged.
The BIM accepts device interrupt requests on inputs
INT0, INT1, INT2 and INT3. Each input is regulated by
Bit 4 (IRE) of the associated control register (CRO
controls INT0, CR! controls INT1,etc.). If IRE (Interrupt
Enable) is set and a device input is asserted, an
Interrupt Request open-collector output (IRQ1 - IRQ7)
is asserted. The asserted IRQX output is selected by
the value programmed in Bits 0, 1, and 2 of the control
register (L0, L1, and L3).
This 3-bit field determines the interrupt request level as
set by software.
Two or more interrupt sources can be programmed to
the same request level. The corresponding IRQX out-
put will remain asserted until multiple interrupt acknowl-
edge cycles respond to all requests.
If the interrupt request level is set to zero, the interrupt is
disabled because there is no corresponding IRQ output.
PIN CONFIGURATION
Part Numbers May Be Marked With "IMP" or "Ei."
VCC
1
40
R/W
2
39
CS 3
38
DTACK
4
37
IACK
5
36
IACKIN
IACKOUT
IRQ1
GND
6
7
8
9
E
I
6
35
34
33
32
GND
10 8 31
VCC
11 C 30
IRQ2
12 1 29
IRQ3
13 5 28
IRQ4
IRQ5
14
15
3
27
26
IRQ6
16
25
IRQ7
17
24
CLK
18
23
INT0
19
22
GND
20
21
40-PIN DIP
A3
A2
A1
D7
D6
D5
D4
D3
D2
GND
VCC
D1
D0
INTAE
INTAL1
INTAL0
INT3
INT2
INT1
VCC/RST
19
For additional information, contact IMP, Inc. at 408.432.9100 or visit www.impweb.com
IMP, Inc. acquired Epic products on January 26, 2001. (see press release at http://www.impweb.com/PRESS/PR012601.htm)

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