3.7. Guidelines: Analog-to-Digital Converter I/O Restriction
The Intel® Quartus® Prime software uses physics-based rules to define the number of I/Os allowed in a particular bank based on the I/O's drive strength. These rules are based on noise calculation to analyze accurately the impact of I/O placement on the ADC performance.
The physics-based rules are available for the following devices starting from these Intel® Quartus® Prime software versions:
- From Intel® Quartus® Prime version 14.1— Intel® MAX® 10 10M04, 10M08, 10M40, and 10M50 devices.
- From Intel® Quartus® Prime version 15.0.1— Intel® MAX® 10 10M02, 10M16, and 10M25 devices.
Geometry-Based Rules for Design Estimation
Intel highly recommends that you use the following geometry-based rules to ensure ADC performance. These guidelines help you to estimate the resources available and prevent additional critical warning from versions of the Intel® Quartus® Prime software that implements the physics-based rules.
Package | Restriction/Guideline |
---|---|
All | Disable all JTAG operation during ADC sampling. The ADC signal-to-noise and distortion ratio (SINAD) is not guaranteed during JTAG operation. |
M153 U169 U324 F256 F484 F672 |
Note: The GPIO pins in bank 8 are constrained by physics-based rules. The Intel® Quartus® Prime software issues a critical warning if the I/O settings violate any of the I/O physics-based rule. Table 20 only provides an example for your reference.
|
E144 |
Note: The GPIO pins in banks 3, 5, and 7 are constrained by physics-based rules. The Intel® Quartus® Prime software issues a critical warning if the I/O settings violate any of the I/O physics-based rule. Table 21 only provides an example for your reference.
|
I/O Standards | TX | RX | Total | Availability (%) |
---|---|---|---|---|
Group 1 | 18 | 18 | 36 | 100 |
Group 2 | 16 | 16 | 32 | 89 |
Group 3 | 7 | 11 | 18 | 50 |
Group 4 | 5 | 7 | 12 | 33 |
Group 5 | 4 | 6 | 10 | 28 |
Group 6 | 4 | 4 | 8 | 22 |
Group 7 | 0 | 8 | 8 | 22 |
I/O Standards | Bank 3 | Bank 5 | Bank 7 | Device I/O Availability (%) | ||||||
---|---|---|---|---|---|---|---|---|---|---|
TX | RX | Availability (%) | TX | RX | Availability (%) | TX | RX | Availability (%) | ||
Group 1 | 7 | 8 | 88 | 6 | 6 | 100 | 4 | 3 | 100 | 54 |
Group 2 | 7 | 8 | 88 | 6 | 6 | 100 | 4 | 3 | 100 | 54 |
Group 3 | 4 | 5 | 50 | 6 | 6 | 100 | 2 | 0 | 29 | 45 |
Group 4 | 3 | 4 | 39 | 5 | 5 | 83 | 0 | 0 | 0 | 39 |
Group 5 | 2 | 3 | 28 | 5 | 5 | 83 | 0 | 0 | 0 | 37 |
Group 6 | 1 | 2 | 17 | 5 | 5 | 83 | 0 | 0 | 0 | 35 |
Group 7 | 0 | 0 | 0 | 5 | 5 | 83 | 0 | 0 | 0 | 32 |
I/O Standard Group | I/O Standards Name and Drive Strength |
---|---|
Group 1 |
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Group 2 |
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Group 3 |
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Group 4 |
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Group 5 |
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Group 6 |
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Group 7 |
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