Manual
Q10-A and Q10-B provide inversion (2 stages), buffering and level translation for the
SIRF_TX to BC_RX data path, with a tap mid way to the flash/program adaptor plug, J1.
Similarly, Q11-A and Q11-B provide the same for the BC_TX to SIRF_RX data path.
Q12-A and Q12-B provide translation from the BC2 GPIO to allow the SiRF processor to be
reflashed. A tap between these devices also goes to J1.
J1 is a diagnostic/test connector accessing most of the control and monitoring points needed
to flash either the GPS or Bluetooth functions (even simultaneously).