EP4CE6E22C8N Altera, EP4CE6E22C8N Datasheet - Page 224

• Manufacturer Part Number: EP4CE6E22C8N
• Description: IC CYCLONE IV FPGA 6K 144EQFP
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE6E22C8N

• Number Of Logic Elements/cells: 6272
• Number Of Labs/clbs: 392
• Total Ram Bits: 270000
• Number Of I /o: 91
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 144-EQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant

8–58
Table 8–15. JTAG Programming Instruction Flows
Cyclone IV Device Handbook, Volume 1
ACTIVE_DISENGAGE
CONFIG_IO
Other JTAG instructions
JTAG_PROGRAM
CHECK_STATUS
JTAG_STARTUP
JTAG TAP Reset/other
instruction
Note to
(1) “R” indicates that the instruction must be executed before the next instruction, “O” indicates the optional instruction, “Rc” indicates the recommended
JTAG Instruction
instruction, and “NA” indicates that the instruction is not allowed in this mode.
Table
8–15:
■
The ACTIVE_DISENGAGE instruction is required before JTAG programming
regardless of the current state of the Cyclone IV device if the MSEL pins are set to an
AS or AP configuration scheme. If the ACTIVE_DISENGAGE instruction is issued
during a passive configuration scheme (PS or FPP), it has no effect on the Cyclone IV
device. Similarly, the CONFIG_IO instruction is issued after an ACTIVE_DISENGAGE
instruction, but is no longer required to properly halt configuration.
the required, recommended, and optional instructions for each configuration mode.
The ordering of the required instructions is a hard requirement and must be met to
ensure functionality.
In the AS or AP configuration scheme, the ACTIVE_DISENGAGE instruction puts the
active configuration controller into idle state. If a successful JTAG programming is
executed, the active controller is automatically re-engaged after user mode is reached
through JTAG programming. This causes the active controller to transition to their
respective user mode states.
If JTAG programming fails to get the Cyclone IV device to enter user mode and
re-engage active programming, there are available methods to achieve this:
■
■
To allow the controllers to properly recognize a successful JTAG programming
that results in the device reaching user mode
In AS configuration scheme, you can re-engage the AS controller by moving the
JTAG TAP controller to the reset state or by issuing the ACTIVE_ENGAGE
instruction.
In AP configuration scheme, the only way to re-engage the AP controller is to issue
the ACTIVE_ENGAGE instruction. In this case, asserting the nCONFIG pin does not
re-engage either active controller.
PS
Rc
Rc
Prior to User Mode (Interrupting
O
O
R
R
R
Configuration)
FPP
Rc
Rc
O
O
R
R
R
Configuration Scheme and Current State of the Cyclone IV Device
AS
Rc
R
O
O
R
R
R
(Note 1)
Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
AP
Rc
R
O
O
R
R
R
PS
Rc
O
O
O
R
R
R
FPP
User Mode
Rc
O
O
O
R
R
R
AS
Rc
O
O
O
R
R
R
© December 2010 Altera Corporation
AP
Rc
R
R
R
R
0
0
NA
PS
Rc
Table 8–15
O
O
R
R
R
FPP
NA
Rc
O
O
R
R
R
Power Up
Configuration
lists
NA
AS
Rc
R
O
R
R
R
NA
AP
Rc
R
R
R
R
0