EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 318

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Configuring Cyclone III Devices
10–82
Cyclone III Device Handbook, Volume 1
Notes to
(1)
(2)
Wait time after
Wait time after
ACTIVE_ENGAGE
ACTIVE_DISENGAGE
CONFIG_IO
JTAG Boundary Scan
Instructions (no
JTAG_PROGRAM
ACTIVE_ENGAGE
PULSE_NCONFIG
Pulse
JTAG TAP Reset
Table 10–16. Wait Time for Issuing CONFIG_IO Instruction
Table 10–17. JTAG CONFIG_IO (Without JTAG_PROGRAM) Instruction Flows
JTAG Instruction
“R” indicates required, “O” indicates optional, “A” indicates any of these instructions, and “NA” indicates not
allowed.
Required if
nCONFIG
Table 10–17
nCONFIG
PULSE_NCONFIG
ACTIVE_ENGAGE
pin
)
is issued
:
Wait Time
O
R
O
A
R
pin is released.
PS
The ACTIVE_DISENGAGE instruction can be used together with
CONFIG_IO instruction to interrupt configuration. Table 10-17 shows the
sequence of instructions to use for various CONFIG_IO usage scenarios.
The instructions ACTIVE_DISENGAGE and ACTIVE_ENGAGE are unique
to Cyclone III devices, and are related to the change to CONFIG_IO
instruction. Unlike Cyclone II devices, the CONFIG_IO instruction does
not control the nSTATUS pin in Cyclone III devices. Since in Cyclone III
devices, the CONFIG_IO instruction does not hold nSTATUS pin low until
(interrupting native
Prior to user mode
Native configuration scheme and current state of the Cyclone III device
O
R
O
A
R
configuration)
FPP
or
is used.
O
R
O
R
O
O
R
AS
O
R
O
R
O
O
R
AP
O
R
O
A
R
200 μs
200 μs
PS
O
R
O
A
R
FPP
User mode
O
R
O
R
O
O
R
AS
Altera Corporation-Preliminary
Note
TIme
O
R
O
R
O
O
R
AP
(1),
NA
PS
(2)
-
-
-
-
-
-
Power up
NA
FPP AS AP
-
-
-
-
-
-
March 2007
NA NA
-
-
-
-
-
-
-
-
-
-
-
-