EP1S40B956C5 Altera, EP1S40B956C5 Datasheet - Page 744

• Manufacturer Part Number: EP1S40B956C5
• Description: IC STRATIX FPGA 40K LE 956-BGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S40B956C5

• Number Of Logic Elements/cells: 41250
• Number Of Labs/clbs: 4125
• Total Ram Bits: 3423744
• Number Of I /o: 683
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 956-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Configuration Schemes
11–26
Stratix Device Handbook, Volume 2
default, the INIT_DONE output is disabled. You can enable the
INIT_DONE output by turning on the Enable INIT_DONE output
option in the Quartus II software.
If you do not turn on the Enable INIT_DONE output option in the
Quartus II software, you are advised to wait for maximum value of
t
the device has been initialized properly and that it has entered user mode.
During configuration and initialization and before the device enters user
mode, the microprocessor must not drive the CONF_DONE signal low.
1
If the Stratix or Stratix GX device detects an error during configuration, it
drives nSTATUS low to alert the microprocessor. The pin on the
microprocessor connected to nSTATUS must be an input. The
microprocessor can then pulse nCONFIG low to restart the configuration
error. With the Auto-restart configuration after error option on, the
Stratix or Stratix GX device releases nSTATUS after a reset time-out
period. After nSTATUS is released, the microprocessor can reconfigure
the Stratix or Stratix GX device without pulsing nCONFIG low.
The microprocessor can also monitor the CONF_DONE and INIT_DONE
pins to ensure successful configuration. If the microprocessor sends all
the data and the initialization clock starts but CONF_DONE and
INIT_DONE have not gone high, it must reconfigure the Stratix or
Stratix GX device. After waiting the specified 136 DCLK cycles, the
microprocessor should restart configuration by pulsing nCONFIG low.
Figure 11–12
configuration using a microprocessor.
CD2UM
(see
If the optional CLKUSR pin is used and nCONFIG is pulled low
to restart configuration during device initialization, you need to
ensure CLKUSR continues toggling during the time nSTATUS is
low (maximum of 40 µs).
Table
shows the circuit for Stratix and Stratix GX parallel
11–9) after the CONF_DONE signal goes high to ensure
Altera Corporation
July 2005