The NMI625 is an ISDB-T/PAL/NTSC/SECAM/FM receiver that implements the RF tuner and demodulator in the same device. NMI625 receives an input single-ended RF signal from the antenna through the VHF-Ⅰ/FM, VHF-Ⅲ, or UHF-band RF input.
The tuner integrates the LNAs. Mixers, VCO, PLL/loop filter, LO generation, crystal oscillator, baseband filters and amplifiers, and analog-digital converters. The tuner also includes an innovative closed loop RF gain control.
The demodulator receives a baseband input from the tuner and provides an automatic Gain control (AGC) signal to control the tuner gain. The demodulator implements the full acquisition, synchronization, and demodulation for ISDB-T, PAL, NTSC, SECAM, and FM transmission and the channel decoding as required by the ISDB specification STD-B31 and Brazil’s ABNT NBR 15601.
The NMI625 communicates with the host via SPI, I2C, BT.601/656 video interface, I2S interface for audio, and the transport stream serial interface for mthe decoded ISDB-T signal. An analog audio put is also provided as an alternative to the I2S audio interface.
Built –in CMOS RF Tuner
Worldwide PAL, NTSC and SECAM support
 Supports all NTSC standard : NTSC-M, NTSC-J, NTSC-4.43
 Supports all PAL standards : B, B1, D, D1, G, H, I, K, K1, M, N, Nc
 Supports SECAM B, D, G, K, K1
Worldwide FM support
 I2C audio interface for FM
 Analog audio interface for FM
Fully integrated VCOs, PLL loop filter, and crystal oscillator
Fully compliant 1-segment ISDB-T reception according to ARIB Standard STD-B31 and Brazil’s ABNT NBR 15601