Sharp MZ-3500 service manual General specification, Data transmission format, MZS500

MZS500

6. R232C INTERFACE

6-1. General specification

Input/output format

No of channels

Code used

Baud rate

Transmission system

Synchronization method

Communication control procedure

Data format

LSI used

RS-232C bit serial input/output

1 channel

JIS 7-channel/JIS 8 channel

110 to 9600 bits/sec

Half-duplex

Start-stop

Non-procedure

Stop bif 1/1.5/2, with or without even or odd parity.

8251 AC or8253C-5 (Programmable interval Timer)

6-2. Data transmission format

	2°	21	22	23	24	25	26
7-bit,
with parity
v	„ _ i \							j v__^___/
Start bit			Data bit		(7 bits)			Parity bit Stop bit (1 or 2 bits)
7-bit,
without parity
V	XV				X	V	X	'

Start bit Data bit (7 bits)

8-bit

with parity

V• w •' V	^ ^ _
Start bit	Data bit (8 bits)

8-bit, without parity

v

Try

Start bit Data bit (8 bits)

Example: 7-bits, even parity, 1 stop bit

Start bit 7-bit data (26H)

Stop bit of precedingdata

Stop bit

Parity bit Stop bit (1 or 2 bits)

,

Y

Stop bit (1 or 2 bit

Parity bit	Start bit of
	succeeding data

Stop bit

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