EP4CGX75DF27C7N Altera, EP4CGX75DF27C7N Datasheet - Page 239

• Manufacturer Part Number: EP4CGX75DF27C7N
• Description: Cyclone IV GX
• Manufacturer: Altera
• Series: CYCLONE® IV GXr

Specifications of EP4CGX75DF27C7N

• Number Of Logic Elements/cells: 73920
• Number Of Labs/clbs: 4620
• Total Ram Bits: 4257792
• Number Of I /o: 310
• Number Of Gates: -
• Voltage - Supply: 1.16 V ~ 1.24 V
• Mounting Type: *
• Operating Temperature: 0°C ~ 85°C
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
Remote System Upgrade
Dedicated Remote System Upgrade Circuitry
Figure 8–33. Remote System Upgrade Circuit Data Path
Notes to
(1) The RU_DOUT, RU_SHIFTnLD, RU_CAPTnUPDT, RU_CLK, RU_DIN,RU_nCONFIG, and RU_nRSTIMER signals are internally controlled
(2) The RU_CLK refers to the ALTREMOTE_UPDATE megafunction block "clock" input. For more information, refer to the
© December 2010 Altera Corporation
by the ALTREMOTE_UPDATE megafunction.
(ALTREMOTE_UPDATE) Megafunction User Guide.
Figure
Previous
State
Register 2
Bit[30..0]
8–33:
RU_DIN
Status Register (SR)
Previous
State
Register 1
Bit[30..0]
This section describes the implementation of the Cyclone IV device remote system
upgrade dedicated circuitry. The remote system upgrade circuitry is implemented in
hard logic. This dedicated circuitry interfaces with the user-defined factory
application configurations implemented in the Cyclone IV device logic array to
provide the complete remote configuration solution. The remote system upgrade
circuitry contains the remote system upgrade registers, a watchdog timer, and state
machines that control those components.
remote system upgrade block.
din
RU_SHIFTnLD
Bit [40..39]
Logic
Current
State
Logic
Bit[31..0]
Shift Register
RU_CAPTnUPDT
dout
din
Logic Array
Bit [38..0]
Update Register
Bit [38..0]
Control Register
Bit [38..0]
Logic
(Note 1)
clkout
capture
update
capture
dout
Logic
RU_CLK (2) RU_DOUT
clkin
update
Figure 8–33
RSU
Reconfiguration
State
Machine
RSU
Master
State
Machine
RU_nCONFIG
shows the data path of the
Cyclone IV Device Handbook, Volume 1
Internal Oscillator/
CLKUSR
timeout
RU_nRSTIMER
Remote Update Circuitry
User
Watchdog
Timer
8–73