Oki JOB60851 - Manual (Page 26)

Chapter 3 System Specifications
page 3-4
(4) Flash writer selection switch (FW-SEL)
The B side of this switch is for executing the program in the MSM66Q573 Flash memory or
overwriting it with the PW66K Flash writer (available separately).
(5) USB connector
This Series B connector is for the USB cable.
(6) Serial (RS-232C) connector This 9-pin female DSUB connector is for the RS-232C cable
linking the JOB60851 board to a terminal emulator running on the host personal computer.
n Note n
Always include the JOB60851 serial number with any queries. It is printed in black ink
on the underside of the board, near the serial connector.
(7) Clock selection jumper
This jumper offers a choice of two onboard MSM66Q573 microcontroller system clock
frequencies: 16 (A) and 24 (B) MHz.
(8), (9) Power supply jumpers
These jumpers offer a choice of two power supplies: USB (A) and AC adapter (B). Both must
be in the same position.
(10) Indicator LEDs (LED1 and LED2)
LED1 monitors the LOAD_SEL signal
LED2 is connected to Port 7, so is under program control. The built-in loader, for example,
changes it from the default red that it has when the power is first applied to green when a
downloaded program is executing.
(11) User connectors (CN1 and CN2)
These connectors provide access to almost all onboard MSM66Q573 microcontroller pins as
well as to the ML60851C USB controller pins. The JOB60851 Starter Kit even includes the
matching connectors for easily connecting these to the user application circuit under
development.