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Ixiasoft
Single-Ended I/O Standards Specifications
Single-Ended SSTL, HSTL, and HSUL I/O Reference Voltage Specifications
Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications
Differential SSTL I/O Standards Specifications
Differential HSTL and HSUL I/O Standards Specifications
Differential I/O Standards Specifications
High-Speed I/O Specifications
DPA Lock Time Specifications
LVDS Soft-CDR/DPA Sinusoidal Jitter Tolerance Specifications
Memory Standards Supported by the Hard Memory Controller
Memory Standards Supported by the Soft Memory Controller
Memory Standards Supported by the HPS Hard Memory Controller
DLL Range Specifications
Memory Output Clock Jitter Specifications
Performance Specifications of the HBM2 Interface in Intel® Stratix® 10 MX, NX, and DX 2100 Devices
HBM2 Interface Performance
OCT Calibration Block Specifications
HPS Clock Performance
HPS Internal Oscillator Frequency
HPS PLL Specifications
HPS Cold Reset
HPS SPI Timing Characteristics
HPS SD/MMC Timing Characteristics
HPS USB UPLI Timing Characteristics
HPS Ethernet Media Access Controller (EMAC) Timing Characteristics
HPS I2C Timing Characteristics
HPS NAND Timing Characteristics
HPS Trace Timing Characteristics
HPS GPIO Interface
HPS JTAG Timing Characteristics
HPS Programmable I/O Timing Characteristics
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Ixiasoft
HPS I2C Timing Characteristics
Symbol | Description | Standard Mode | Fast Mode | Unit | ||
---|---|---|---|---|---|---|
Min | Max | Min | Max | |||
Tclk | Serial clock (SCL) clock period | 10 | — | 2.5 | — | μs |
Tclk_jitter | I2C clock output jitter | — | 2 | — | 2 | % |
THIGH 148 | SCL high period | 4 149 | — | 0.6 150 | — | μs |
TLOW 151 | SCL low period | 4.7 152 | — | 1.3 153 | — | μs |
TSU;DAT | Setup time for serial data line (SDA) data to SCL | 0.25 | — | 0.1 | — | μs |
THD;DAT 154 | Hold time for SCL to SDA data | 0 | 3.15 | 0 | 0.6 | μs |
TVD;DAT and TVD;ACK 155 | SCL to SDA output data delay | — | 3.45 156 | — | 0.9 157 | μs |
TSU;STA | Setup time for a repeated start condition | 4.7 | — | 0.6 | — | μs |
THD;STA | Hold time for a repeated start condition | 4 | — | 0.6 | — | μs |
TSU;STO | Setup time for a stop condition | 4 | — | 0.6 | — | μs |
TBUF | SDA high pulse duration between STOP and START | 4.7 | — | 1.3 | — | μs |
Tscl:r 158 | SCL rise time | — | 1000 | 20 | 300 | ns |
Tscl:f 158 | SCL fall time | — | 300 | 6.54 | 300 | ns |
Tsda:r 158 | SDA rise time | — | 1000 | 20 | 300 | ns |
Tsda:f 158 | SDA fall time | — | 300 | 6.54 | 300 | ns |
Figure 17. I2C Timing Diagram
Related Information
148 You can adjust Thigh using the ic_ss_scl_hcnt or ic_fs_scl_hcnt register.
149 The recommended minimum setting for ic_ss_scl_hcnt is 440.
150 The recommended minimum setting for ic_fs_scl_hcnt is 71.
151 You can adjust Tlow using the ic_ss_scl_lcnt or ic_fs_scl_lcnt register.
152 The recommended minimum setting for ic_ss_scl_lcnt is 500.
153 The recommended minimum setting for ic_fs_scl_lcnt is 141.
154 THD;DAT is affected by the rise and fall time.
155 TVD;DAT and TVD;ACK are affected by the rise and fall time, as well as the SDA hold time (set by adjusting the ic_sda_hold register).
156 Use maximum SDA_HOLD = 240 to be within the specification.
157 Use maximum SDA_HOLD = 60 to be within the specification.
158 Rise and fall time parameters vary depending on external factors such as the characteristics of the IO driver, pull-up resistor value, and total capacitance on the transmission line.