Daisy Chain Streaming Mode

An apparatus, comprising:

• a serial data output port configured to send output data to a first electronic device;
• a serial data input port configured to receive input data from a second electronic device;
• a chip select output port configured to send output to a plurality of electronic devices, the plurality of electronic devices connected in a daisy chain and including the first and second electronic devices;
• and
• an interface circuit, configured to:
• set the plurality of electronic devices in a daisy chain streaming mode with:
• a first command issued through the serial data output port;
• and
• a first changed edge on a chip select signal issued through the chip select output port;
• wherein, in the daisy chain streaming mode, each given electronic device is configured to repeatedly:
• read data from a data source of the given electronic device to yield first data;
• output the first data to a next electronic device in the daisy chain;
• and
• output a received data received from a previous electronic device in the daisy chain to the next electronic device in the daisy chain;
• through the serial data input port, receive a continuous stream of data read by the plurality of electronic devices, the continuous stream of data including at least two instances of first data from each of the plurality of electronic devices.

A method, comprising:

• a serial data input port, receiving input from a first electronic device;
• through a serial data output port, sending output to a second electronic device;
• through a chip select input port, receiving input from a master control unit;
• and
• in a daisy chain streaming mode, based on a first received command and on a first changed edge of a chip select signal on the chip select input port, repeatedly:
• reading data from a data source of the apparatus to yield first data;
• outputting the first data to the serial data output port;
• and
• copying data received at the serial data input port to the serial data output port after the first data.

A method, comprising:

• through a serial data output port, sending output data to a first electronic device;
• through a serial data input port, receiving input data from a second electronic device;
• through a chip select output port, sending output to a plurality of electronic devices, the plurality of electronic devices connected in a daisy chain and including the first and second electronic devices;
• setting the plurality of electronic devices in a daisy chain streaming mode with:
• a first command issued through the serial data output port;
• and
• a first changed edge on a chip select signal issued through the chip select output port;
• wherein, in the daisy chain streaming mode, each given electronic device repeatedly:
• reads data from a data source of the given electronic device to yield first data;
• outputs the first data to a next electronic device in the daisy chain;
• and
• outputs a received data received from a previous electronic device in the daisy chain to the next electronic device in the daisy chain;
• and
• through the serial data input port, receiving a continuous stream of data read by the plurality of electronic devices, the continuous stream of data including at least two instances of first data from each of the plurality of electronic devices.