A40MX02-PG100 查看數據表（PDF） - Microsemi Corporation
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A40MX02-PG100 Datasheet PDF : 173 Pages
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40MX and 42MX FPGAs
Figure 8 •
Clock Networks of 42MX Devices
CLKB
CLKINB
CLKA
From
Pads
CLKINA
S0
CLKMOD S1
Internal
Signal
CLKO(17)
Clock
Drivers
CLKO(16)
CLKO(15)
CLKO(2)
CLKO(1)
Figure 9 •
Clock Tracks
Quadrant Clock Network of A42MX36 Devices
QCLKA
QCLKB
*QCLK1IN
Quad
Clock
Modul
QCLK1
QCLK3
Quad
Clock
Modul
S0 S1
S1 S0
QCLKC
QCLKD
*QCLK3IN
*QCLK2IN
Quad
Clock
Modul
QCLK2
QCLK4
Quad
Clock
Modul
*QCLK4IN
S0 S1
S1 S0
Note: *QCLK1IN, QCLK2IN, QCLK3IN, and QCLK4IN are internally-generated signals.
3.2.5 MultiPlex I/O Modules
42MX devices feature Multiplex I/Os and support 5.0 V, 3.3 V, and mixed 3.3 V/5.0 V operations.
The MultiPlex I/O modules provide the interface between the device pins and the logic array. Figure 10,
page 14 is a block diagram of the 42MX I/O module. A variety of user functions, determined by a library
macro selection, can be implemented in the module. (See the Antifuse Macro Library Guide for more
information.) All 42MX I/O modules contain tristate buffers, with input and output latches that can be
configured for input, output, or bidirectional operation.
All 42MX devices contain flexible I/O structures, where each output pin has a dedicated output-enable
control (Figure 10, page 14). The I/O module can be used to latch input or output data, or both, providing
fast set-up time. In addition, the Designer software tools can build a D-type flip-flop using a C-module
combined with an I/O module to register input and output signals. See the Antifuse Macro Library Guide
for more details.
A42MX24 and A42MX36 devices also offer selectable PCI output drives, enabling 100% compliance with
version 2.1 of the PCI specification. For low-power systems, all inputs and outputs are turned off to
reduce current consumption to below 500 A.
To achieve 5.0 V or 3.3 V PCI-compliant output drives on A42MX24 and A42MX36 devices, a chip-wide
PCI fuse is programmed via the Device Selection Wizard in the Designer software (Figure 11, page 14).
When the PCI fuse is not programmed, the output drive is standard.
DS2316 Datasheet Revision 16.0
13
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