Motorola MVME162 User Manual page 84

Functional Description
The Z85230 supplies an interrupt vector during interrupt acknowledge cycles.
The vector is modified within the Z85230 according to the interrupt source.
Interrupt request levels are programmed via the MCchip. Refer to the Z85230
data sheet listed in Chapter 1 and to the MCchip Programming Model in the
MVME162 Embedded Controller Programmer's Reference Guide for further
information.
4 MVME162 Serial Port 1
Port A of the Z85230 is interfaced as EIA-232-D DCE (data circuit-terminating
equipment) and is routed to the 25-pin DB25 connector marked
1/CONSOLE
(on the MVME712x) or DB25 (on the MVME712M) connector on the
MVME712 series transition module. It is identified there as Port 2.
Although both ports are connected to the same Z85230 Port A, there are
several differences between them:
On the MVME162 front panel, Port 1 can be connected to the TxC and RxC
clock signals which may be present on the DB25 connector. These
connections are made via header J11 on the MVME162 board (see Figures
2-3 and 2-4 in Chapter 2). The TxC and RxC clocks are not available at Port
2 on the MVME712 series transition modules.
On MVME712x transition modules, Port 2 can be routed either through a
DB9 DTE serial interface or (if the module is so equipped
onboard modem and its standard RJ11 (Telco) jack. These connections are
made via jumper headers J16 and J17 on the MVME712x.
On MVME712M transition modules, Port 2 can be configured as either a
DCE or a DTE serial port via jumper headers J16 and J17 on the
MVME712M.
Figures 2-3 (sheets 1 and 2) and 2-4 (sheets 1 and 2) in Chapter 2 illustrate the
configurations available for Port A.
MVME162 Serial Port 2
Port B of the Z85230 is configured via a serial interface module which is
installed at connector J10 on the MVME162 board. Four serial interface
modules are available:
SIM05 and SIM06 (EIA-232-D DTE and DCE respectively)
SIM07 and SIM08 (EIA-530 DTE and DCE respectively)
1. The MVME712AM and MVME712-13 are equipped with a modem.
4-6
on the MVME162 front panel. Port A is also routed to a DB9/RJ11
SERIAL PORT
1
) through the
User's Manual