Controller

The adapter consists of a 36-pin Omnetics connector, a 12-pin Omnetics connecotr, a 16-pin Omnetics connector, a power management unit (PMU) block, a microcontroller unit (MCU), and a programmer connector. This system is shown in the figure below.

graph LR
    %% PCB Definition
    PCB1[Headstage]

    subgraph PCB2[Controller]
        direction LR

        subgraph b5["PMU-MCU"]
            direction TB
            c1[PMU]
            c2[MCU]
            c1 --> c2
        end

        conn1["Omnetics-16
               Conn"]
        conn0["Omnetics-12
               Conn"]
        subgraph b4["36-Pin Conn"]
            e6[12]
            e7[14]
            e8[10]
        end

        e6 <--> conn0
        e6 <--> b5    
        e7 <--> conn1
        e8 <--> b5

    end

    b0["128
        Electrode
        Array"]
    b1[Conn]

    %% Top-level connections
    b0 <--> b1 <--> PCB1
    PCB1 <----> b4
    conn1 <--> i1["Intan Rec/Stim
                 Controller"]
    conn0 <--> i0["Intan Rec
                 Controller"]
    b5 <--> Programmer

Figure 1. System architecutre of the Adapter.

We describe each block/component below:

Table 1. Headstage components.

Block/Component	Part/Page	Manufacturer	Description
36-Pin Conn	X	Omnetics	36-pin connector.
Omnetics-12 Conn	X	Omnetics	12-pin connector compatible with Intan Recording Controller.
Omnetics-16 Conn	X	Omnetics	16-pin connector compatible with Intan Rec/Stim Controller.
PMU Block	PMU	N/A	Power management unit receiving +3.3V and generating +/-9V and +3V for the analog muxes and MCU.
MCU Block	MCU	ST Microelectronics	STM32U083RC microcontroller unit which programs the analog muxes.