SYS68K/CPU-30 R4 Technical Reference Manual
Hardware Description
Page 63
3.9.4
Configuration
of Serial I/O
Ports
Serial ports #1 and #4 are controlled by DUSCC #1 at location J90. Serial
ports #2 and #3 are controlled by DUSCC #2 at location J89. In both
cases, the DUSCC is connected to a local 8-bit data bus and is accessible
via byte transfers.
The RS-232 interfaces of port #1, #2, #3 and #4 are identical except that
port #4 is wired directly to the VMEbus P2 connector, while ports #1
through #3 are wired to 9-pin D-Sub connectors labeled "1" through "3"
on the front panel of the CPU board and to the optional 5-row VMEbus
P2 connector. As a factory option, ports #1 through #3 may also be
connected to the default assembled 3-row VMEbus P2 connector.
In the sections that follow the figures will refer to the hardware
configuration switches and to the serial driver/receiver hybrid sockets.
For reference, the switches and hybrids are assigned to the serial ports
according to the following table.
3.9.5
RS-232 and
RS-422/485
Driver Modules
In order to conserve board space and to simplify varying the serial
interfaces, FORCE Computers has developed RS-232 and RS-422/485
hybrid modules: the FH-002 and FH-003.
These 21-pin single in-line (SIL) modules are installed in sockets so that
they may be easily changed to meet specific application needs. Please
refer to the preceding table for the assignment of hybrid modules to serial
ports.
3.9.6
RS-232
Configuration
of Serial Ports
By default, all four serial ports are configured for RS-232 compatibility.
For proper RS-232 operation, the correct driver/receiver hybrid module
must be installed (FH-002), and the serial interface switches SW12-1 –
SW12-4 must be configured for RS-232. The default switch setting is
detailed below.
Table 23: Switches & Module Assignment for Serial Port
Configuration
DUSCC
Channel
Hybrid
Switch SW12-
Port
#1
A
J118
4
"4"
#1
B
J119
1
"1"
#2
A
J123
3
"2"
#2
B
J124
2
"3"
Содержание SYS68K/CPU-30 R4
Страница 41: ...Installation SYS68K CPU 30 R4 Technical Reference Manual Page 28...
Страница 127: ...Hardware Description SYS68K CPU 30 R4 Technical Reference Manual Page 114...
Страница 130: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 117 4 2 1 RTC 72421...
Страница 131: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 118 4 2 2 DUSCC 68562...
Страница 132: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 119 4 2 3 PI T TS68230...
Страница 133: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 120 4 2 4 SCSI 87033 34...
Страница 134: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 121 4 2 5 FDC37C65C...
Страница 135: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 122 4 2 6 LANCE Am79C90...
Страница 136: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 123 4 2 7 SIA Am7992B...
Страница 137: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 124 4 2 8 Motorola MC68030 and MC68882...
Страница 145: ...VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 132...
Страница 189: ...Appendix to VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 176...