X.21 to rs-449 converter, Figure b-3 – Sun Microsystems Sun PCI High Speed Quad Port Serial Interface Adapter 819-1207-11 User Manual

Page 54

Sun PCI High Speed Quad Port Serial Interface Adapter User’s Guide • May 2010

X.21 to RS-449 Converter

illustrates the pin connections required for an X.21 to RS-449 converter.

FIGURE B-3

X.21 to RS-449 Converter

When using an X.21 conversion you must perform the following hsip_init
operation:

Note –

Both receive and transmit clock inputs (RxC and TxCI) need a clock signal if

txc

is set to txc and rxc is set to rxc.

# hsip_init hihp0 9600 txc=txc rxc=rxc

T(2,9)

S (6,13)

C (3,10)

R (4,11)

I (5,12)

G (8)

X.21 interface

TxD (4,22)

RxC (8,26)

RTS (7,25)

CTS (9,27)

RxD (6,24)

DCD (13,31)

SG (19)

RS-449 Interface
Workstation

TxCI (5,23)

(15 pin connector)

(37 Pin Connector)