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Communication Troubleshooting

Electrical Characteristics
RS-232 Signals
RS-449 Signals
Ethernet Controllers
CPU Serial Ports
CPU Keyboard and Mouse
USB Port
IEEE-1394 Port
CPU Parallel Port
SS5 / SS20 AUI Port
Sun Microphone II
SS5 / SS4 Audio Module Audio Jacks
SS20 Audio Jacks
A11 / A12 / A14 Audio Jacks
10BASE-5 / 10BASE-T Ethernet
SunLink ISDN
SBE/S Ethernet
Fast Ethernet
SPC/S / HSI/S

Electrical Characteristics

EIA RS-232-C Section 2.3

For data interchange circuits, the signal shall be considered in the marking condition when the voltage (V1) interchange circuit measured at the interface point, is more negative than minus three volts with respect to Circuit AB (Signal Ground). The signal shall be considered in the spacing condition when the voltage (V1) is more positive than plus three volts with respect to circuit AB. The signal state in not uniquely defined when the voltage (V1) is in this transition region.

EIA RS-232-D Section 2.1.3

For data interchange circuits, the signal shall be considered in the marking condition when the voltage (V1) on the interchange circuit, measured at the interface point, is more negative than minus three volts with respect to Circuit AB (Signal Ground). The signal shall be considered in the spacing condition when the voltage (V1) is more positive than plus three volts with respect to circuit AB. The region between plus three volts and minus three volts is defined as the transition region. The signal state in not uniquely defined when the voltage (V1) is in this transition region.

During the transmission of data, the marking condition shall be used to denote the binary state ONE and the spacing condition shall be used to denote state ZERO.

EIA RS-422-A Section 4.1.1

For either binary state, the magnitude of the differential voltage (V0) measured between the two generator output terminals shall not be less than 6.0 volts; nor shall the magnitude of V0a and V0b measured between the two generator output terminals and generator circuit ground be more than 6.0 volts.

EIA RS-423-A Section 4.1.1

For either binary state, the magnitude of the voltage (V0) measured between the generator output terminal and generator circuit ground shall not be less than 4.0 volts nor more than 6.0 volts. For the opposite binary state, the polarity of V0 shall be reversed.

EIA RS-449-A Section 2.1.1

The following circuits are classified as Category I circuits: SD, RD, TT, ST, RT, RS, CS, RR, TR, and DM.

For applications where the signaling rate on the data interchange circuits (Circuits SD and RD) is 20,000 bits per second or less, the individual Category I circuits shall use either the balanced electrical characteristics of RS-423, without the cable termination resistance (Rt), or the unbalanced electrical characteristics of RS-422-A. Two leads shall be brought out to the interface connector for each Category I circuit. Each interchange circuit consists of a pair of wires interconnecting a balanced or unbalanced generator and a differential receiver.

For applications where the signaling rate on the data interchange circuits (Circuits SD and RD) is above 20,000 bits per second, all Category I circuits shall use the balanced electrical characteristics of RS-422. Use of optional cable termination resistance (Rt) permitted. Each interchange circuit consists of a pair of wires interconnecting a balanced generator and a differential receiver.

EIA RS-449-A Section 2.1.2

All other circuits are classified as Category II circuits. For all applications, Category II circuits shall use the unbalanced electrical characteristics of RS-423. Each Category II interchange circuit consists of one wire interconnecting an unbalanced generator and a differential receiver.

RS-232 Signals

PIN SIGNAL SIGNAL NAME FLOW DESCRIPTION
2
14		 BA
or
TD		 Transmit Data Output Data transmitted to the data communications equipment.
3
16		 BB
or
RD		 Receive Data Input Data received from the data communications equipment.
4
19		 CA
or
RTS		 Request to Send Output Signal sent to the data communications equipment, asking if it is ready to start accepting data.
5
13		 CB
or
CTS		 Clear to Send Input Ready to accept data signal from the data communications equipment.
6 CC
or
DSR		 Data Set Ready Input Data communications equipment indicates the status of the local data set.
7 AB
or
SG		 Signal Ground None Signal Ground provides a reference level for the signal voltages.
8
12		 CF
or
DCD		 Data Carrier Detect Input Data communications equipment detected "carrier." Example: a modem senses tones sent to it by another modem over phone lines.
15 DB
or
TC		 Transmit Clock
from DCE		 Input Transmit clock from the modem. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).
17 DD
or
RC		 Receive Clock
from DCE		 Input Receive clock from the modem. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).
20 CD
or
DTR		 Data Terminal
Ready		 Output The DTE is powered on and ready to communicate as the "local data terminal" with the data communication equipment. For example, the modem.
24 DA
or
TCO		 Transmit Clock
from DTE		 Output Provides transmit clock from the DTE. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).

RS-449 Signals

PIN SIGNAL SIGNAL NAME FLOW DESCRIPTION
4
22		 SD
or
TD		 Transmit Data Output Data transmitted to the data communications equipment.
6
24		 RD Receive Data Input Data received from the data communications equipment.
7
25		 RS
or
RTS		 Request to Send Output Signal sent to the data communications equipment, asking if it is ready to start accepting data.
9
27		 CS
or
CTS		 Clear to Send Input Ready to accept data signal from the data communications equipment.
11
29		 DM
or
DSR		 Data Set Ready Input Data communications equipment indicates the status of the local data set.
19 SG Signal Ground None Signal Ground provides a reference level for the signal voltages.
13
31		 RR
or
DCD		 Data Carrier Detect Input Data communications equipment detected "carrier."
Example: a modem senses tones sent to it by another modem over phone lines.
5
23		 ST
or
TC		 Transmit Clock
from DCE		 Input Transmit clock from the modem. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).
8
26		 RT
or
RC		 Receive Clock
from DCE		 Input Receive clock from the modem. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).
12
30		 TR
or
DTR		 Data Terminal
Ready		 Output The DTE is powered on and ready to communicate as the "local data terminal" with the data communication equipment. For example, the modem.
17
35		 TT
or
TCO		 Transmit Clock
from DTE		 Output Provides transmit clock from the DTE. Usually not used for asynchronous devices (terminals, printers, and modems, etc.).

Ethernet Controllers

82586
with
8023A		 7990
with
7992		 7990
with
T7213		 79C90 MACIO
with
T7213		 MACIO
with
LXT901		 79C940 FEPS CHEERIO RIO
Sun-2
3/E
3/110
3/150
3/160
3/180
3200
3400
4100
4400		 3/50
3/60
3/60LE
4/20
4/25
4/40
4/50
4/60
4/65
4/75
4300
SS10
SS600
SS1000
X450
X453		 SS10
SS1000
SBE
FSBE
DSBE		 4/50
SS10
FSBE		 4/10
4/15
4/30
SS10SX
SS20		 SS5
S240
SS4
Xterm 1
A11		 SQEC A12
A14
X1018
X1042
X1049
X1059
X2610
X2611
X2612
X2620
X2622		 A16
A20/A25
A21/A22
A23
A26
X1032
X1033
X1034
X2630
X2632
CP1500		 A28
A36

MACIO ASIC (NCR 89C100)

The Sun designed MACIO ASIC provides three special purpose SBus DMA channels commonly used on SPARC platforms: Ethernet, SCSI, and Parallel Port. The Ethernet block is based on the NCR 92C990 macrocell which is a superset of (and backward compatible with) the AM7990.

FEPS ASIC (STP2002)

The Sun designed FEPS ASIC is a Fast Ethernet, Parallel Port, and Fast Wide SCSI controller.

CHEERIO ASIC (STP2003)

The Sun designed CHEERIO ASIC is a Fast Ethernet and 8-Bit EBus2 controller.

RIO ASIC (SME2300)

The Sun designed RIO ASIC is a Fast Ethernet, IEEE-1394, and USB controller with an 8-Bit EBus and PCI bridge interface.

Pin Assignments
CPU Serial Ports

Sun-4/60/65/75 Serial Ports A and B
SS5 Serial Ports A and B
SS1000 and SC2000 Serial Ports A and B
A11, A12, and A14 Ports A and B
E3x00/4x00/5x00/6x00 Serial Ports A and B
A21 and A22 Serial Port A
RS-232/RS-423
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
2 TD 8 DCD
3 RD 15 TC
4 RTS 17 RC
5 CTS 20 DTR
6 DSR 24 TCO
7 GND

Sun-4/15/30, SS10, SS20, A20,
A25, A26, and A27
Adapter 530-1869 Serial Port A
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
2 TD 8 DCD
3 RD 15 TC
4 RTS 17 RC
5 CTS 20 DTR
6 DSR 24 TCO
7 GND

Sun-4/15/30, SS10, SS20*, A20,
A25, A26, and A27
Adapter 530-1869 Serial Port B
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
2 TD 8 DCD
3 RD 15 TC
4 RTS 20 DTR
5 CTS 24 TCO
7 GND

Port B is asynchronous only.
*   A jumper setting change and an
adapter cable is required to use the
SS20 Port B in synchronous mode.
Pin-9 is dsr and Pin-10 is rtxc.

Netra t1 Model 100/105 Serial Port
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 RTS 5 GND
2 DTR 6 RXD
3 TXD 7 DSR
4 GND 8 CTS

JavaStation JJ and JK Serial Port A
Ultra 5 and Ultra 10 Serial Port B
RS-232/RS-423 9-Pin Male D-Sub
PIN SIGNAL PIN SIGNAL
1 DCD 5 GND
2 RD 6 DSR
3 TD 7 RTS
4 DTR 8 CTS
9 RI

Pin Assignments
CPU Keyboard and Mouse Port

CPU Keyboard and Mouse Port
8-Pin Female Mini-Din
PIN SIGNAL PIN SIGNAL
1 GND 5 TD-KB
2 GND 6 RD-KB
3 +5Vdc 7 *
4 RD-M 8 +5Vdc
*  Pin 7 is:
Connected to Pins 1 and 2 on SS1, SS1+, SS2, IPC, and IPX.
TD-M on the 4300, 4400, and SS600MP.
Keyboard Power-On on SS4, SS5, SS10, SS10SX, SS20,
     Classic, LX, SS1000, SC2000, A11, A12, A14,
     A16, A20, A21, A22, A23, A25, A26, A27, and Ex000.

JavaStation JJ and JK Mouse Port
6-Pin Female Mini-Din
PIN SIGNAL PIN SIGNAL
1 Data 4 +5Vdc
2 Reserved 5 Clock
3 Ground 6 Reserved

JavaStation JJ and JK Keyboard Port
6-Pin Female Mini-Din
PIN SIGNAL PIN SIGNAL
1 Data 4 +5Vdc
2 Reserved 5 Clock
3 Ground 6 Reserved

Pin Assignments
USB Port

USB Port 4-Pin
PIN SIGNAL PIN SIGNAL
1
2		 USB0_VCC
CM_USB_D0_N		 3
4		 CM_USB_D0_P
Ground
1
2		 USB1_VCC
CM_USB_D1_N		 3
4		 CM_USB_D1_P
Ground

Pin Assignments
IEEE-1394 Port

IEEE-1394 Port 6-Pin
PIN SIGNAL PIN SIGNAL
1 EX_BUSPWR 2 Ground
3 TPB1_OUT_N 4 TPB1_OUT_P
5 TPA1_OUT_N 6 TPA1_OUT_P

Pin Assignments
CPU Parallel Port

SS5, SS10, and SS20 Parallel Port
Upper 26-Pin Female Hi-Density
SPARCstation Voyager
26-Pin Female Hi-Density
PIN SIGNAL PIN SIGNAL
1 STROBE 14 AFXT
2 DATA 0 15 ERROR
3 DATA 1 16 RESET
4 DATA 2 17 SLCTIN
5 DATA 3 18 GND
6 DATA 4 19 GND
7 DATA 5 20 GND
8 DATA 6 21 GND
9 DATA 7 22 GND
10 ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SLCTOUT 26 GND
Use IBM Adapter 530-1861
Use Centronics Adapter 530-1857

Parallel Port
Sun-4/15/30, Xterminal 1, SS4, A11, A12, A14,
A16, A20, A21, A22, A23, A25, A26, and A27
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
1 STROB E 14 AUTOFD
2 DATA 0 15 ERROR
3 DATA 1 16 INIT
4 DATA 2 17 SLCTIN
5 DATA 3 18 GND
6 DATA 4 19 GND
7 DATA 5 20 GND
8 DATA 6 21 GND
9 DATA 7 22 GND
10 ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SLCT

SS5, SS10, SS20, and SS Voyager
Centronics Parallel Port Adapter 530-1857
26-Pin Hi-Density to 36-Pin Centronics
PIN SIGNAL PIN SIGNAL
1 STROBE 15 SLCTIN
2 DATA 0 20 GND
3 DATA 1 21 GND
4 DATA 2 22 GND
5 DATA 3 23 GND
6 DATA 4 24 GND
7 DATA 5 25 GND
8 DATA 6 26 GND
9 DATA 7 27 GND
10 ACK 28 GND
11 BUSY 31 RESET
12 PE 32 ERROR
13 SLCTOUT 36 SLCTIN
14 AFXT

SS5, SS10, SS20, and SS Voyager
IBM Parallel Port Adapter 530-1861
26-Pin Hi-Density to 25-Pin D-Sub
PIN SIGNAL PIN SIGNAL
1 STROBE 14 AFXT
2 DATA 0 15 ERROR
3 DATA 1 16 RESET
4 DATA 2 17 SLCTIN
5 DATA 3 18 GND
6 DATA 4 19 GND
7 DATA 5 20 GND
8 DATA 6 21 GND
9 DATA 7 22 GND
10 ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SLCTOUT

Pin Assignments
AUI Port

SPARCclassic, SS5, and SS20
10BASE-5 Ethernet AUI Port
Lower 26-Pin Female Hi-Density
PIN SIGNAL PIN SIGNAL
1 E.TD- 14 E.TD+
2 E.RD+ 15 E.RD-
3 E.COL- 16 E.COL+
4 E.+12Vdc 17 E.GND
5 Unused 18 Unused
6 Unused 19 Unused
7 Unused 20 Unused
8 Unused 21 Unused
9 Unused 22 Unused
10 Unused 23 Unused
11 Unused 24 Unused
12 Unused 25 Unused
13 Unused 26 Unused
Use AUI Adapter 530-2021

Pin Assignments
Sun Microphone II

Sun Microphone II

The Microphone II is not compatible with Sun4c systems.

SS5 / SS4 Audio Module

SS5 and SS4 Audio Module 501-2592 Line-In Jack
SS5 and SS4 Audio Module 501-2592 Line-Out Jack
SS5 and SS4 Audio Module 501-2592 Microphone Jack
SS5 and SS4 Audio Module 501-2592 Headphone Jack

SS20 Audio Jacks

SS20 Line-In Jack
SS20 Line-Out Jack
SS20 Microphone Jack
SS20 Headphone Jack

A11 / A12 / A14 Audio Jacks

A11, A12, and A14 Line-In Jack
A11, A12, and A14 Line-Out Jack
A11, A12, and A14 Microphone Jack
A11, A12, and A14 Headphone Jack

10BASE-5 / 10BASE-T Ethernet

10BASE-5 Ethernet
8-Pin Female Mini-Din
PIN SIGNAL PIN SIGNAL
2 COL+ 9 COL-
3 TD+ 10 TD-
5 RD+ 12 RD-
6 GND 13 +12Vdc

10BASE-T Ethernet
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 TPO+ 5 Unused
2 TPO- 6 TPI-
3 TPI+ 7 Unused
4 Unused 8 Unused

Sunlink ISDN

SunLink IDSN
SUPPORTED SunLink ISDN CARRIERS SPECIFICATION
British Telecom ISDN2
Deutsche Bundepost Telekom 1TR6
France Telecom Numeris VN2
Nippon Telegraph and Telephone INS-Net 64
AT&T 5ESS 5e5 conformant US carriers AT&T 5ESS 5e5

ISDN Network Termination NT
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 PS3+ 5 TD-
2 PS3- 6 RD-
3 RD+ 7 PS2-
4 TD+ 8 PS2+

ISDN Terminal Endpoint TE
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 PS3+ 5 RD--
2 PS3- 6 TD--
3 TD+ 7 PS2-
4 RD+ 8 PS2+

SBE/S 10BASE-5 and 10BASE-T Ethernet

SBE/S 10BASE-T and 10BASE-5
14-Pin Champ
PIN SIGNAL PIN SIGNAL
1 COL+ 8 COL-
2 TD+ 9 TD-
3 RD+ 10 RD-
4 GND 11 +12Vdc
5 GND 12 +12Vdc
6 TPO+ 13 TPO-
7 TPI+ 14 TPI-

SBE/S 10BASE-5 Adapter 530-1812
15-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
1 GND 9 COL-
2 COL+ 10 TD-
3 TD+ 11 GND
4 GND 12 RD-
5 RD+ 13 +12Vdc
6 GND 14 GND
7 Unused 15 Unused
8 GND

SBE/S 10BASE-T Adapter 530-1813
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 TPO+ 5 Unused
2 TPO- 6 TPI-
3 TPI+ 7 Unused
4 Unused 8 Unused

Fast Ethernet

Fast Ethernet 10BASE-T/100BASE-T Port
8-Pin RJ45
PIN SIGNAL PIN SIGNAL
1 TX+ 5 Unused
2 TX- 6 RX-
3 RX+ 7 Unused
4 Unused 8 Unused

Fast Ethernet MII Port
40-Pin Female Hi-Density
PIN SIGNAL PIN SIGNAL
1 PWR 21 PWR
2 MDIO 22 GND
3 MDC 23 GND
4 RXD3 24 GND
5 RXD2 25 GND
6 RXD1 26 GND
7 RXD0 27 GND
8 RXDV 28 GND
9 RXCLK 29 GND
10 RXER 30 GND
11 TXER 31 GND
12 TXCLK 32 GND
13 TXEN 33 GND
14 TXD0 34 GND
15 TXD1 35 GND
16 TXD2 36 GND
17 TXD3 37 GND
18 COL 38 GND
19 CRS 39 GND
20 PWR 40 PWR

SPARCcluster PDB Ethernet Cable 530-2149 and 530-2150
8-Pin RJ45

SPC/S

SPC/S RS-232/RS423 Serial Ports
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
2 TD 6 DSR
3 RD 7 GND
4 RTS 8 DCD
5 CTS 20 DTR

SPC/S Parallel Port
25-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
1 STROBE 14 AFXN
2 DATA 0 15 ERROR
3 DATA 1 16 RESET
4 DATA 2 17 SLCI_IN
5 DATA 3 18 GND
6 DATA 4 19 GND
7 DATA 5 20 GND
8 DATA 6 21 GND
9 DATA 7 22 GND
10 ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SLCT_OU T

HSI/S

HSI/S RS-449 Ports 0, 1, 2, and 3
37-Pin Female D-Sub
PIN SIGNAL PIN SIGNAL
4 SD- 22 SD+
5 ST- 23 ST+
6 RD- 24 RD+
7 RS- 25 RS+
8 RT- 26 RT+
9 CS- 27 CS+
11 DM- 29 DM+
12 TR- 30 TR+
13 RR- 31 RR+
17 TT- 35 TT+
19 GND


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