There is provided a digital broadcast reception device capable of mounting a function module card having a digital broadcast reception function as an option unit to a host device. The function module card has: a card control section; and a tuner section for receiving a digital broadcast signal, generating TS and a TS clock for TS transfer, and directly transferring them via a bus to a decoder/de-scrambler of the host device. The host device has a host control section for communication with the card control section, an I/O section, and a decoder/de-scrambler. Data transfer between the card control section and the host control section is performed by a master/slave type data transfer method setting the host control section as a master and using the clock of the host control section while data transfer between the tuner section and the decoder/de-scrambler is performed by using the TS clock.