pxb4219 Infineon Technologies Corporation, pxb4219 Datasheet - Page 115

• Manufacturer Part Number: pxb4219
• Description: Iwe8 Interworking Element For 8 E1/t1 Lines
• Manufacturer: Infineon Technologies Corporation

5.5.2
The IWE8 microprocessor interface allows connection of Intel type microprocessors as
well as Motorola type microprocessors (e.g. the PowerPC).
The Microprocessor Interface Mode is determined via the status of the pins PMT and
TBUS at the positive edge of the internal reset. Therefore, PMT and TBUS levels have
to be kept at least 3 clock cycles after deassertion of RESET.
Table 28 Configuration of the Microprocessor Interface Mode via PMT and TBUS
PMT
0
1
The mode currently assigned to the microprocessor interface is visible via “mtypsel” in
the “Version Register” (“vers”, see
Intel Mode
The connection of the 16 bit Intel compatible asynchronous microprocessor interface to
an Intel 386EX processor is shown in
If the ready signal at pin MPRDY shall be used, a glue logic between MPRDY of the
IWE8 and RDY of the 386EX is required, which generates an active low signal with 1
microprocessor cycle length after a rising edge detection of the MPRDY signal.
Figure 32
Motorola Mode
Figure 33
interface to the IBM “PowerPC
Data Sheet
shows the connection of the 16 bit Motorola compatible asynchronous
Microprocessor Interface Mode
Connection of IWE8 to an Intel Type Microprocessor
Intel i386 EX
TBUS
0
1
DATA[0-15]
ADR[1-18]
CSn
INTi
INTj
WR
RD
TM
”.
Chapter
Figure
115
Mode
Intel Mode
Motorola Mode
7.16).
32.
PXB4219 / PXB4220 / PXB4221
MPIR2
MPIR1
MPCS
MPRD
MPWR
MPDAT[0-15]
MPADR[0-17]
IWE8
Interface Description
2002-05-06