2–44
Chapter 2: Device Datasheet for Arria V Devices
Configuration Specification
Table 2–42 lists the internal clock frequency specification for the AS configuration
scheme.
Table 2–42. DCLK Frequency Specification in the AS Configuration Scheme—Preliminary (1), (2)
Minimum
Typical
7.9
Maximum
12.5
Unit
MHz
MHz
MHz
MHz
5.3
10.6
21.3
15.7
31.4
62.9
25.0
50.0
42.6
100.0
Notes to Table 2–42:
(1) This applies to the DCLK frequency specification when using the internal oscillator as the configuration clock source.
(2) The AS multi-device configuration scheme does not support DCLKfrequency of 100 MHz.
PS Configuration Timing
Figure 2–8 shows the timing waveform for a passive serial (PS) configuration when
using a MAX II device or microprocessor as an external host.
(1)
Figure 2–8. PS Configuration Timing Waveform
tCF2ST1
tCFG
tCF2CK
nCONFIG
nSTATUS (2)
tSTATUS
tCF2ST0
(6)
tCLK
CONF_DONE (3)
t
CH tCL
tCF2CD
tST2CK
(4)
(5)
DCLK
tDH
Bit 2 Bit 3
Bit n
Bit 0 Bit 1
DATA0
tDSU
High-Z
User I/O
User Mode
INIT_DONE (7)
tCD2UM
Notes to Figure 2–8:
(1) The beginning of this waveform shows the device in user mode. In user mode, nCONFIG
, nSTATUS, and CONF_DONEare at logic high levels. When
nCONFIGis pulled low, a reconfiguration cycle begins.
(2) After power up, the Arria V device holds nSTATUSlow for the time of the POR delay.
(3) After power up, before and during configuration, CONF_DONEis low.
(4) Do not leave DCLKfloating after configuration. You can drive it high or low, whichever is more convenient.
(5) DATA0is available as a user I/O pin after configuration. The state of this pin depends on the dual-purpose pin settings in the Device and Pins
Option.
(6) To ensure a successful configuration, send the entire configuration data to the Arria V device. CONF_DONEis released high after the Arria V device
receives all the configuration data successfully. After CONF_DONEgoes high, send two additional falling edges on DCLKto begin initialization
and enter user mode.
(7) After the option bit to enable the INIT_DONEpin is configured into the device, the INIT_DONEgoes low.
Arria V Device Handbook
February 2012 Altera Corporation
Volume 1: Device Overview and Datasheet
ALTERA [ ALTERA CORPORATION ]
