EP1M350 datasheet(84/86 Pages) ALTERA

84 / 86 page

Altera Corporation

Mercury Programmable Logic Device Family Data Sheet

Before and during device configuration, all I/O pins are pulled to VCCIO

by a built-in weak pull-up resistor.

SRAM configuration elements allow Mercury devices to be reconfigured

in-circuit by loading new configuration data into the device. Real-time

reconfiguration is performed by forcing the device into command mode

with a device pin, loading different configuration data, reinitializing the

device, and resuming user-mode operation. In-field upgrades can be

performed by distributing new configuration files.

Configuration Schemes

The configuration data for a Mercury device can be loaded with one of five

configuration schemes (see Table 52), chosen on the basis of the target

application. A configuration device, intelligent controller, or the JTAG

port can be used to control the configuration of a Mercury device. When a

configuration device is used, the system can configure automatically at

system power-up.

By connecting the configuration enable (nCE) and configuration enable

output (nCEO) pins on each device, multiple Mercury devices can be

configured in any of five configuration schemes.

f For more information on configuration, see Application Note 116

(Configuring APEX 20K, FLEX 10K & FLEX 6000 Devices).

Device Pin-

Outs

See the Altera web site (http://www.altera.com) or the Altera Digital

Library

for pin-out information.

Table 52. Data Sources for Configuration

Configuration Scheme

Data Source

Configuration device

Passive serial (PS)

MasterBlasterTM or ByteBlasterMVTM download cable

or serial data source

Passive parallel asynchronous (PPA)

Parallel data source

Passive parallel synchronous (PPS)

Parallel data source

JTAG

MasterBlaster or ByteBlasterMV download cable or a

microprocessor with a Jam STAPL or JBC file

EP1M350 数据表(PDF) 84 Page - Altera Corporation

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