Roland PNC-900 user manual Interface Specifications, Parallel

• Interface Specifications

[Parallel]
Standard	In compliance with the specifications of Centronics
Input signals
	STROBE (1 BIT), DATA (8 BIT)
Output signals
	BUSY (1 BIT), ACK (1 BIT)
Level of input/output signals	TTL level
Transmission method	Asynchronous
[Serial]
Standard	RS-232C specifications
Transmission method	Asynchronous, duplex data transmission
Transmission speed	4800, 9600 (Selected using DIP switches.)
Parity check	Odd, Even, or None (Selected using DIP switches.)
Data bits	7 or 8 bits (Selected using DIP switches.)
Stop bits	1 or 2 bits (Selected using DIP switches.)

Parallel Connector (in compliance with specifications of Centronics)

Signal	Terminal			Signal		Pin Connection
number	number		number
NC	36	18		HIGH**
HIGH*	35	17		GND
NC	34	16		GND
GND	33	15			NC	18	1
HIGH*	32	14			NC
NC	31	13		HIGH*
	30	12		GND
	29	11		BUSY		36	19
	28	10
					ACK
	27	9			D7
	26	8			D6		+5 V
GND	25	7			D5		3.3KΩ
						* =
	24	6			D4
	23	5			D3		+5 V
							100Ω
	22	4			D2	**=
	21	3			D1
	20	2			D0
	19	1
				STROBE

Serial Connector (RS-232C)

Signal	Terminal		Signal	Pin connection
number	number		number
NC	25	13	NC
NC	24	12	NC
NC	23	11	NC
NC	22	10	NC
NC	21	9	NC	13	1
DTR	20	8	NC
NC	19	7	SG
NC	18	6	DSR
NC	17	5	CTS	25	14
NC	16	4	RTS
NC	15	3	RXD
NC	14	2	TXD
		1	FG

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