Host - Desktop development computing system used in IDE for cross compilation, cross debugging, connection to the target agent, trace tools and any number of other tools that connect to a target server on the host to communicate with target agent software resident on the embedded system.
H-Reset - Hardware Reset, either from a power-on reset state transition or from assertion of an external signal to drive a hardware reset.
HSTL - High Speed Transceiver Logic, a 0.0-1.5v logic level standard used for high speed single-ended digital I/O, most often for memory I/O (speeds of 180 MhZ and greater).
HWIC - Hardware In Circuit, a concept whereby debug and trace tools have hardware probes in circuit with a CPU by interfacing to signals coming from the CPU/SoC ASIC to the rest of the system board for the purpose of snoop tracing and/or control - e.g. JTAG debug emulator, Vision ICE Event Trace, RISCWatch trace port probe, and CodeTEST Universal trace probe.