Hard disk drive controller having versatile chip connector having printed circuit board engaged by at least two data ports having two pairs of differential connector elements
View Patent ↗A hard disk controller (HDC) chip has interchangeable “A” and “B” ports of differential connector element pairs, with one connector element of each pair being disposed closest to the edge of the chip and with the other element inboard of it to facilitate connection to more than one printed circuit board (PCB) serial interface pinout without crossing traces of a pair and with maintaining traces of a pair parallel and on the same PCB level.
1. A hard disk controller (HDC) chip comprising:
a HDC processor;
a first input/output (I/O) port having at least two pairs of differential connector elements, the first port being electrically connected to the HDC processor for sending data to and receiving data from a host computer; and
a second I/O port having at least two pairs of differential connector elements, the second port being electrically connected to the HDC processor for sending data to and receiving data from a host computer, the ports being minor images of each other.
2. The HDC chip of claim 1 , wherein each pair of differential connector elements includes a first connector element having a first polarity and a second connector element having a second polarity opposite the first polarity.
3. The HDC chip of claim 2 , wherein the chip defines an edge and wherein for each pair of differential connector elements one connector element is disposed closer to the edge than the other connector element, which is substantially inboard on the chip relative to its associated connector element.
4. The HDC chip of claim 3 , wherein each first connector element is disposed closer to the edge than its associated second connector element.
5. The HDC chip of claim 1 , wherein the connector elements are at least partially spherical.
6. The HDC chip of claim 1 , in combination with at least one disk of a hard disk drive.
7. The HDC chip of claim 3 , in combination with a printed circuit board (PCB), wherein each connector element is associated with an electrically conductive trace extending between it and a connector element on the PCB, the traces associated with a pair of connector elements extending generally parallel to and coplanar with each other.
8. The HDC chip of claim 7 , wherein the PCB is configured to use a serial interface.
9. The HDC chip of claim 7 , wherein the PCB is configured to use a fibre channel arbitrated loop (“FCAL”) interface.