Jim Paris <email@example.com>
This level-shifting serial adapter for the PSP (and other devices) is based on the MAX3319E interface chip. This chip provides guaranteed 460kbps RS-232 compatible operation with a supply as low as +2.25V, making it a perfect choice for the +2.5V supply and logic interface on the PSP.
The board supports either a male or female DB9 connector in a DTE or DCE configuration, selectable with solder jumpers during assembly. Typically, to avoid the need for adapters and “null-modem” cables, female/DCE is used to connect the PSP to a PC, while male/DTE is used to connect the PSP to other devices like a GPS.
It was designed to fit comfortably inside a DB9 plastic hood. Four holes with 2.54mm spacing provide the power and data connections to the PSP.
|V||Supply voltage, +2.25V to +3.0V||5, +2.5V|
|G||Ground||2, Digital ground|
|IN||Serial input to the adapter||3, TXD|
|OUT||Serial output from the adapter||6, RXD|
A small number of these adapters are for sale. Please note that I haven't found a good source for the PSP cable, and so these are being sold with everything except the cable, as shown below.
The complete kit contains
The cost is US $8 per adapter, and shipping is US $4 per order (USPS Priority Mail or USPS Global Priority Mail). Send money and a shipping address via PayPal to firstname.lastname@example.org.