17
Digital Bus Interface
When the Pico E‐14 is not connected to a CardBus host, the digital bus can be reconfigured to connect with a wide variety of high‐speed digital busses and peripherals. All signals have user selectable pull‐ up, pull‐down, keeper or HI‐Z termination. Drive strength is also user selectable between 2 and 24mA. All pins can be configured for input, output and bi‐directional mode.
With proper termination, speeds of over 200 MHz are possible. The external digital bus is set to transmit and receive at 3.3V only.
Electrical Specifications (DC) | Minimum | Nominal | Maximum |
Positive Supply Input Voltage (Vcc) | 3.15V | 3.3V | 5.5V |
Low Level Input Voltage | 0V | 0V | 0.7V |
High Level Input Voltage | 2V | 3.0V | 3.3V |
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Drive Strength | 2mA |
| 24mA |
E‐14 Hardware Reference Manual | www.picocomputing.com | Pico Computing, Inc. |
