PEF82902FV11XP Lantiq, PEF82902FV11XP Datasheet - Page 34

• Manufacturer Part Number: PEF82902FV11XP
• Manufacturer: Lantiq

Specifications of PEF82902FV11XP

• Lead Free Status / Rohs Status: Supplier Unconfirmed

In multiplexed mode the address on the address bus (AD0-AD7) is latched in by ALE
before a read/write access via the address/data bus is performed.
The T-SMINT
be selected with the AMOD bit in the MODE2 register. The address mode after reset is
the indirect address mode (AMOD = ’0’). Reprogramming into the direct address mode
(AMOD = ’1’) has to take place in the indirect address mode.
register addressing modes.
Direct address mode (AMOD = ’1’): The register address to be read or written is directly
set in the way described above.
Indirect address mode (AMOD = ’0’):
• non-muxed: only the LSB of the address bus (A0)
• muxed: only the LSB of the address-data bus (AD0)
gets evaluated to address a virtual ADDRESS (0
Every access to a target register consists of:
• a write access (muxed or non-muxed) to ADDRESS to store the target register´s
• a read access (muxed or non-muxed) from DATA to read from the target register or
• a write access (muxed or non-muxed) to DATA to write to the target register
•
Figure 8
Data Sheet
address, as well as
A6 - A0
7Dh
7Ch
7Fh
7Eh
04h
03h
02h
01h
00h
â
Direct/Indirect Register Address Mode
I provides two different ways to address the register contents which can
Direct Address Mode
AMOD = ´1´
D7 - D0
Data
22
H
A0
1h
0h
) and a virtual DATA (1
Indirect Address Mode
AMOD = ´0´ (default)
ADDRESS
DATA
Functional Description
Figure 8
illustrates both
regacces.vsd
H
D7 - D0
) register.
PEF 82902
Data
2001-11-09