Motorola MVME162 User Manual
Functional Description
MVME162IG/D2
1-15
1
is an 8 bit device; however, the interface provided by the MCchip supports 8-
bit, 16-bit, and 32-bit accesses to the MK48T08. Refer to the MCchip descrip-
tion in the MVME162 Embedded Controller Programmer’s Reference Guide and to
the MK48T08 data sheet for detailed programming and battery life
information.
bit, 16-bit, and 32-bit accesses to the MK48T08. Refer to the MCchip descrip-
tion in the MVME162 Embedded Controller Programmer’s Reference Guide and to
the MK48T08 data sheet for detailed programming and battery life
information.
VMEbus Interface and VMEchip2
The local bus to VMEbus interface and the VMEbus to local bus interface are
provided by the optional VMEchip2. The VMEchip2 can also provide the
VMEbus system controller functions. Refer to the VMEchip2 description in the
MVME162 Embedded Controller Programmer’s Reference Guide for detailed
programming information.
provided by the optional VMEchip2. The VMEchip2 can also provide the
VMEbus system controller functions. Refer to the VMEchip2 description in the
MVME162 Embedded Controller Programmer’s Reference Guide for detailed
programming information.
Note that the
ABORT
switch logic in the VMEchip2 is not used. The GPI inputs
to the VMEchip2 which are located at $FFF40088 bits 7-0 are not used. The
ABORT
switch interrupt is integrated into the MCchip ASIC at location
$FFF42043. The GPI inputs are integrated into the MCchip ASIC at location
$FFF4202C bits 23-16.
$FFF4202C bits 23-16.
I/O Interfaces
The MVME162 provides onboard I/O for many system applications. The I/O
functions include serial ports, IndustryPack (IP) interfaces, optional LAN
Ethernet transceiver interface, and optional SCSI mass storage interface.
functions include serial ports, IndustryPack (IP) interfaces, optional LAN
Ethernet transceiver interface, and optional SCSI mass storage interface.
Serial Communications Interface
The MVME162 uses a Zilog Z85230 serial communications controller to
implement the two serial communications interfaces. Each interface supports
CTS, DCD, RTS, and DTR control signals; as well as the TxD and RxD
transmit/receive data signals, and TxC/RxC synchronous clock signals.
implement the two serial communications interfaces. Each interface supports
CTS, DCD, RTS, and DTR control signals; as well as the TxD and RxD
transmit/receive data signals, and TxC/RxC synchronous clock signals.
The Z85230 supports synchronous (SDLC/HDLC) and asynchronous
protocols. The MVME162 hardware supports asynchronous serial baud rates
of 110b/s to 38.4Kb/s.
protocols. The MVME162 hardware supports asynchronous serial baud rates
of 110b/s to 38.4Kb/s.
The Z85230 supplies an interrupt vector during interrupt acknowledge cycles.
The vector is modified based upon the interrupt source within the Z85230.
Interrupt request levels are programmed via the MCchip. Refer to the Z85230
data sheet listed in this chapter, and to the MCchip Programming Model in the
MVME162 Embedded Controller Programmer’s Reference Guide, for information.
The vector is modified based upon the interrupt source within the Z85230.
Interrupt request levels are programmed via the MCchip. Refer to the Z85230
data sheet listed in this chapter, and to the MCchip Programming Model in the
MVME162 Embedded Controller Programmer’s Reference Guide, for information.
MVME162 Serial Port 1
The A port of the Z85230 is interfaced as DCE (data circuit-terminating
equipment) with the EIA-232-D interface and is routed to:
equipment) with the EIA-232-D interface and is routed to: