RFI Emission OS-214plus Service Manual download pdf (Page 16)

TTP-244 Plus Bar Code

Printer Service Manual

3.2 Pin Configuration

RS-232C

CONFIGURATION

+5 V

TXD

RXD

CTS

GND

RTS

N/C

RTS

N/C

USB

CONFIGURATION

N/C

D-

D+

GND

Centronics

SPP Mode

Nibble

In/Out

Function

Strobe

N/A

A low on this line indicates that there are valid data

at the host. When this pin is de-asserted, the +ve

clock edge should be used to shift the data into the

device.

2-9

Data 0-7

N/A

Data Bus. Single-directional.

Ack

N/A

Out

A low on this line indicates that there are valid data

at the Device. When this pin is de-asserted, the

+ve clock edge should be used to shift the data into

the host.

Busy

N/A

Out

When in reverse direction, a high indicates data,

while a low indicates a command cycle. In forward

direction, it functions as PtrBusy.

Paper Out /

End

N/A

Out

When low, device acknowledges reverse request.

Select

N/A

Out

Extensibility flag

Ground

N/A

GND

No Defined

N/A

16-17

Ground

N/A

GND

Ground

No Defined

N/A

19-30

Ground

N/A

GND

Ground

No Defined

N/A

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

TTP-244 Plus Bar Code 10
Printer Service Manual 10

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RFI Emission OS-214plus Service Manual Page 16

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