User's Manual

PMAC2 VME Hardware Reference Manual
Connectors 11
J4 (JMACRO) 26-Pin Header
Front View
Pin # Symbol Function Description Notes
1 DOUT7 Output Ring Out Bit 7 Macro Ring Command
2 DOUT6 Output Ring Out Bit 6 Macro Ring Transmit
3 DOUT5 Output Ring Out Bit 5 Macro Ring Transmit
4 DOUT4 Output Ring Out Bit 4 Macro Ring Transmit
5 DOUT3 Output Ring Out Bit 3 Macro Ring Transmit
6 DOUT2 Output Ring Out Bit 2 Macro Ring Transmit
7 DOUT1 Output Ring Out Bit 1 Macro Ring Transmit
8 DOUT0 Output Ring Out Bit 0 Macro Ring Transmit
9 CMD_IN Input
10 DIN7 Input Ring In Bit 7 Macro Ring Receive
11 DIN6 Input Ring In Bit 6 Macro Ring Receive
12 DIN5 Input Ring In Bit 5 Macro Ring Receive
13 DIN4 Input Ring In Bit 4 Macro Ring Receive
14 DIN3 Input Ring In Bit 3 Macro Ring Receive
15 DIN2 Input Ring In Bit 2 Macro Ring Receive
16 DIN1 Input Ring In Bit 1 Macro Ring Receive
17 DIN0 Input Ring In Bit 0 Macro Ring Receive
18 CMD_OUT Output
19 TCLK Output Ring Clock 10 MHz
20 GND Common Reference Voltage
21 STB_OUT Output Byte Strobe
22 GND Common Reference Voltage
23 DAT_STB Input Data Byte Strobe
24 GND Common Reference Voltage
25 CMD_STB Input Cmd Byte Strobe
26 VLTN Input Violation Flag Taxi Chip Receive Error
The JMACRO Network Ring Interface Connector provides the interface to the Acc-42 MACRO driver/receiver
accessory board.
J5/JRS232 (10-Pin Header)
Front View
Pin # Symbol Function Description Notes
1 PHASE In/Out Phasing Clock See Notes 1, 2
2 DTR Bidirect Data Term Rdy Tied to DSR
3 TXD/ Input Receive Data Host transmit data
4 CTS Input Clear To Send Host ready bit
5 RXD/ Output Send Data Host receive data
6 RTS Output Req. To Send PMAC ready bit
7 DSR Bidirect Data Set Ready Tied to DTR
8 SERVO In/Out Servo Clock See Note 2
9 GND Common Pmac Common
10 +5V Output +5vdc Supply Power Supply Out
This connector is used for serial communications on a PMAC2 VME if E17 and E18 jumpers connect pins 1 and
2. This connector cannot be used for daisy chain communication interconnection of multiple PMACs, although it
can be used to share servo and phase clocks for synchronicity. TheJ5A RS-422 interface is required for daisy
chain communication.
Note 1: If communicating to PMAC2 over this connector with a modem style terminal emulator such as
Microsoft Windows Terminal, line 1 should not be connected.
Note 2: SERVO and PHASE are outputs if jumper E1 is OFF; they are inputs if jumper E1 is ON.