Sun-microsystems Sun PCI High Speed Quad Port Serial Interface Adap Manual do Utilizador descarregar pdf (Página 54)

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

X.21 to RS-449 Converter

FIGURE B-3 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)

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 63 64

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Sun-microsystems Sun PCI High Speed Quad Port Serial Interface Adap Manual do Utilizador Página 54