The CXA2513M is a 3-band preset graphic equalizer developed for stereo set, cassette tape recorder with radio, etc. It has 5 modes: FLAT, ROCK, VOCAL, POP and JAZZ. The selection is via 5 control pins. The center frequencies of three bands are 100Hz, 1kHz and 10kHz. The center frequencies of these bands are determined by 2 external resistors. It also has a standby feature. When the standby pin goes low, the IC stores the last preset mode. When this pin goes high, the IC restores the last preset mode before standby. It can be initialized to any one of the two preset modes (FLAT, ROCK) upon power up. Features