ATX Version 3.0 Multi Rail Desktop Platform Power Supply
Design Guide
Sideband Signals DC Specifications (Required)
The four sideband signals defined for the 12V-2x6 connector DC Specifications are shown in Table 3-7-. This is the requirement defined by the PCIe* CEM 5.1 Specification for the Add-in Cards.
Table 3-7: PCI Express* 12V-2x6 Connector – Sideband Signal DC Specifications
Symbol | Parameter | Conditions | Min | Max |
VHMAX | Max High Voltage any Pin | 3.3 V +0.5 V | ||
VIL | Input Low Voltage | -0.2 V | +0.8 V | |
VIH | Input High Voltage | +2.0 V | 3.3 V +0.2 V | |
VOL | Output Low Voltage | 7.0 mA | -0.2 V | +0.5 V |
VOH | Output High Voltage (refer note) | 4.0 mA | +2.4 V | 3.3 V + 0.2 V |
RPULL-UP | Pull-up / Pull-down Resistance tolerance | -10% | +10% |