ep3c120f780c8nes Altera Corporation, ep3c120f780c8nes Datasheet - Page 359

• Manufacturer Part Number: ep3c120f780c8nes
• Description: Cyclone Iii Device Family
• Manufacturer: Altera Corporation

Altera Corporation-Preliminary
March 2007
RU_SHIFTnLD
RU_CAPTnUPDT
RU_DIN
RU_DOUT
Table 12–11. Interface Signals Between Remote System Upgrade Circuitry and Cyclone III Device Logic
Array (Part 2 of 2)
Signal Name
Input to remote system
upgrade block (driven by
device logic array)
Input to remote system
upgrade block (driven by
device logic array)
Input to remote system
upgrade block (driven by
device logic array)
Output from remote system
upgrade block (driven to
device logic array)
Signal Direction
This pin determines if the shift register contents are shifted
over during the next clock edge or loaded in/out.
When this signal is driven high (1'b1), the remote system
upgrade shift register shifts data left on each rising edge of
RU_CLK
When
RU_CAPTnUPDT
upgrade update register is updated with the contents of the
shift register on the rising edge of
When
RU_CAPTnUPDT
upgrade shift register captures the status register and either
the control or update register (depending on whether the
current configuration is application or factory, respectively) on
the rising edge of
This pin determines if the contents of the shift register are
captured or updated on the next clock edge.
When the
input signal has no function.
When
RU_CAPTnUPDT
upgrade shift register captures the status register and either
the control or update register (depending on whether the
current configuration is application or factory, respectively) on
the rising edge of
When
RU_CAPTnUPDT
upgrade update register is updated with the contents of the
shift register on the rising edge of
Data to be written to the remote system upgrade shift register
on the rising edge of
register,
Output data from the remote system upgrade shift register to
be read by logic array logic. New data arrives on each rising
edge of
RU_SHIFTnLD
RU_SHIFTnLD
RU_SHIFTnLD
RU_SHIFTnLD
RU_CLK
.
RU_SHIFTnLD
Remote System Upgrade With Cyclone III Devices
RU_SHIFTnLD
.
is driven low (1'b0), the remote system
is driven high (1'b1), the remote system
RU_CLK
is driven high (1'b1), the remote system
RU_CLK
is driven low (1'b0), the remote system
Cyclone III Device Handbook, Volume 1
RU_CLK
is driven low (1'b0) and
is driven low (1'b0) and
is driven low (1'b0) and
is driven low (1'b0) and
Description
must be asserted.
.
.
signal is driven high (1'b1), this
. To load data into the shift
RU_CLK
RU_CLK
.
.
12–19