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sinara-hw / Fastino

Fast 32-channel, 3MS/s per channel, 16bit DAC EEM card compatible with Zotino
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SC18IS602B is EOL #92

Open MorganTL opened 8 months ago

MorganTL commented 8 months ago

The manufacturer recommends using SC18IS606PWJ, but the pinout is different SC18IS606PWJ iSC18IS602B

gkasprow commented 2 months ago

Both chips look nearly identical from the register/commands point of view. The only difference is the lack of a GPIO3/SS3 pin. FUnction FD7h has different bit allocation SC18IS602 chip image SC18IS606 chip image

SC18IS606 chip has additional "Read Version: Function ID FEh"

We use GPIO3 as FPGA configuration reset. @jordens can we live without one of GPIOs? image

gkasprow commented 2 months ago

I think we could merge SPI FLASH SSEL and FLASH_UP_EN (via inverter)

gkasprow commented 2 months ago

A better idea is to control the switch with CRESET_B Anyway, we keep resetting the FPGA configuration engine when talking to FLASH.

gkasprow commented 2 months ago

such circuit could work image