Cyclone® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683375
Date 10/18/2023
Public
Document Table of Contents

7.5.1. I/O Standards and Drive Strength for Configuration Pins

In configuration mode, the output drive strength is set as listed in the table below. Dual-function pin output drive strength is programmable if it is used as a regular I/O pin.

Table 95.  I/O Standards and Drive Strength for Configuration PinsThe configuration pins listed support only fast slew rate and OCT is not enabled for these pins.
Configuration Pin Type I/O Standard Drive Strength (mA)
nSTATUS Dedicated 3.0 V LVTTL 4
CONF_DONE Dedicated 3.0 V LVTTL 4
CvP_CONFDONE Dual Function 3.0 V LVTTL 4
DCLK Dedicated 3.0 V LVTTL 12
TDO Dedicated 3.0 V LVTTL 12
AS_DATA0/ASDO Dedicated 3.0 V LVTTL 8
AS_DATA1 Dedicated 3.0 V LVTTL 8
AS_DATA2 Dedicated 3.0 V LVTTL 8
AS_DATA3 Dedicated 3.0 V LVTTL 8
INIT_DONE Dual Function 3.0 V LVTTL 8
CRC_ERROR Dual Function 3.0 V LVTTL 8
nCSO Dedicated 3.0 V LVTTL 8
Note: You can use the VCCPGM voltage other than 3 V. Refer to the I/O Standards and Drive Strength for Configuration Pins table for the I/O standard for each Configuration Pin.