[sdiy] TR-8 partial teardown pics

Richie Burnett rburnett at richieburnett.co.uk
Thu Jun 18 21:08:18 CEST 2015


Some pictures of Roland TR-8 internals for anyone who's interested: (15MByte 
ZIP!)

http://www.richieburnett.co.uk/temp/tr8pics.zip

Some of the chips used...

AKM5357  24-bit stereo ADC
AKM4385  24-bit stereo DAC
NJM2115  Dual op-amp
NJM8080  Dual op-amp
NJM4556AD  Headphone amp
Roland ESC2  Custom DSP  (large area BGA package)
IS42S16160D  16M x 16bit Dynamic RAM
IS42S16800F  8M x 16bit Dynamic RAM
IS42S16400F  4M x 16bit Dynamic RAM
MX25L3206E  4MByte SPI Flash Mem
MB39A123  6-channel PWM DC-DC controller

-Richie,




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