Hot-Swap - Renesas IDT 89HPES4T4 User Manual

IDT Hot-Plug and Hot-Swap
Notes
PES4T4 User Manual

Hot-Swap

The PES4T4 is hot-swap capable and meets the following requirements
– All of the I/Os are tri-stated on reset (i.e., SerDes, GPIO, Master SMBus clock and data, etc.).
– All I/O cells function predictably from early power. This means that the device is able to tolerate a
non-monotonic ramp-up as well as a rapid ramp-up of the DC power.
– All I/O cells are able to tolerate a precharge voltage.
– Since no clock is present during physical connection, the device will maintain all outputs in a high-
impedance state even when no clock is present.
– The I/O cells meet VI requirements for hot-swap.
– The I/O cells respect the required leakage current limits over the entire input voltage range.
In summary, the PES4T4 meets all of the I/O requirements necessary to build a PICMG compliant hot-
swap board or system. The hot-swap I/O buffers of the PES4T4 may also be used to construct proprietary
hot-swap systems. See the 89HPES4T4 Data Sheet for a detailed specification of I/O buffer characteristics.
8 - 6 February 1, 2011