PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 178

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

Data Sheet
Priority 4: If there is no match with any XADRSx or ADDRSELx register the access to the external
•
Figure 11-10 Address Window Arbitration
Note: Only the indicated overlaps are defined. All other overlaps lead to erroneous bus
For a description of the regsiter RP0H which holds the reset configuration (number of
chip select lines, address range etc.) please refer to chapter “System Startup
Configuration” on page 600.
Precautions and Hints
• The external bus interface is enabled as long as at least one of the BUSCON registers
has its BUSACT bit set.
• PORT1 will output the intra-segment address as long as at least one of the BUSCON
registers selects a demultiplexed external bus, even for multiplexed bus cycles.
• Not all address areas defined via registers ADDRSELx may overlap each other. The
operation of the EBC will be unpredictable in such a case. See chapter „Address Window
Arbitration“.
• The address areas defined via registers ADDRSELx may overlap internal address
areas. Internal accesses will be executed in this case.
• For any access to an internal address area the EBC will remain inactive (see EBC Idle
State).
11.4
When the external bus interface is enabled, but no external access is currently executed,
the EBC is idle. As long as only internal resources (from an architecture point of view)
like IRAM, GPRs or SFRs, etc. are used the external bus interface does not change (see
table below).
XBCON0
BUSCON2
BUSCON1
BUSCON0
cycles. Eg. ADDRSEL4 may not overlap ADDRSEL2 or ADDRSEL1. The
hardwired XADRSx registers are defined non-overlapping.
bus uses register BUSCON0.
EBC Idle State
BUSCON4
BUSCON3
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The External Bus Interface
PSB 21473
2003-03-31
INCA-D
Active
Window
Inactive
Window