SHARP PC-G850V(S) User Manual -
Appendix A: 11-Pin Interface
3
Appendix A: 11-Pin Interface
Signals and Pin-Out
On the left side of the PC-G850V(S) there is an 11-pin interface intended for
communication with other devices. It is a multi-functional interface, hence it can operate
in different (sub-)modes. The actual mode is selected through operational commands or
menue items of the PC-G850V(S).
1. SIO / RS-232C-mode (e.g.
OPEN“COM:“
)
2. SSIO-mode (Synchronous Serial Input/Output)
a. CE-126P print protocol (e.g.
LPRINT
without
preceding
OPEN
)
b. LPRT-protocol (e.g.
OPEN“LPRT:“
)
3. PWM-mode (Pulse Width Modulation)
a. CE-126P tape protocol (e.g.
BSAVE/BLOAD
with a CE-126P)
b. Generic PWM-protocol (e.g.
BSAVE/BLOAD
with another PC-G850V)
4. PIO-mode (e.g.
OPEN“PIO:“
)
Programmable, 8-bit parallel port interface
5. PIC-mode (activated by the PIC-loader in the assembler menue)
Programming interface for PIC microcontrollers
The association of physical pins to logical signals (called pin-out) as well as the
configured direction for input (I) or output (O) depends on the active mode. The following
table gives an overview. Looking from the left side of the PC-G850V(S) pin-1 is the
leftmost and pin-11 the rightmost.
Pin
#
SIO-Mode
SSIO/PWM-Mode
PIO-Mode
PIC-Mode
Signal
I/O Signal
I/O
Signal
I/O
Signal
I/O
1
-
-
-
-
-
-
-
-
2
VCC(+5V) -
VCC(+5V)
-
VCC(+5V)
-
VCC(+5V)
-
3
GND
-
GND
-
GND
-
GND
-
4
RTS
O
BUSY
O
Bit0
I/O
CP
O
5
DTR
O
DOUT
O
Bit1
I/O
CLK#
O
6
RXD
I
XIN
I
Bit2
I/O
DATAIN
I
7
TXD
O
XOUT
O
Bit3
I/O
DATAOUT
O
8
CD
I
DIN
I
Bit4
I/O
LOWBATT#
I
9
CTS
I
ACK
I
Bit5
I/O
-
-
10 DSR
I
EX1
I
Bit6
I/O
-
-
11 CI
I
EX2
I
Bit7
I/O
-
-
The next sections describe the SIO-mode and respective connection options in detail.
The other modes are covered subsequently.
