User manual

Psion Teklogix 8525/8530 Vehicle-Mount Computer User Manual B-3
Appendix B: Port Pinouts
External Keyboard–High Density DB-26 (8530 Only)
B.4 External Keyboard–High Density DB-26 (8530 Only)
20 CONSOLE_TXD_SEL – Transmit data Select - selects whether the PCON
or PXA-255 (CPU) is sending data out the CONSOLE_TXD pin. **Internal
use only.
21 MOTION DETECT – Alternate input- blanks the screen for the period that
this pin is grounded -(usually implemented via extra wires in the Unit input
Power cable.
22 AUXILIARY_ID – External device Identity Input Pin.
23 NO CONNECT.
24 PCON_PROGRAM – Input – used to program Peripheral Controller
**Internal use only.
25 NO CONNECT.
26 NO CONNECT.
Signal
#
Function Signal Type Notes
1 32 Khz Clock + 5V diff
2 32 Khz Clock - 5V diff
3 Keyboard Interrupt + 5V diff
4 Keyboard Interrupt - 5V diff
5 Ground Power
6 I2C Serial Clock
I2C serial data
interface
7 Ground Power
8I2C Serial Data
I2C serial data
interface
95V Power
10 5V Switched Power
11 3V3 Standby Power
Pin
No.
Signal And Description