PEF82912FV14XP Lantiq, PEF82912FV14XP Datasheet - Page 36

• Manufacturer Part Number: PEF82912FV14XP
• Manufacturer: Lantiq

Specifications of PEF82912FV14XP

• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Header 41
This sequence (header 41
interleaved A-D-A-D read access. Generally, it can be used for any register access to
the address range 20
of the wradr. The sequence can have any length and is terminated by the rising edge of
CS.
Example for a read/write access with header 41
Header 49
This sequence (header 49
A-D-A-D read access. Generally, it can be used for any register access to the address
range 20
wradr. The sequence can have any length and is terminated by the rising edge of CS.
Example for a read/write access with header 49
2.1.2
The 8-bit parallel microcontroller interface with address decoding on chip allows an easy
and fast microcontroller access.
The parallel interface of the Q-SMINT I provides three types of P busses which are
selected via pin ALE. The bus operation modes with corresponding control pins are listed
in
•
Table 6
The occurrence of an edge on ALE, either positive or negative, at any time during the
operation immediately selects the interface type (3). A return to one of the other interface
types is possible only if a hardware reset is issued.
Data Sheet
(1) Motorola
(2) Siemens/Intel non-multiplexed
(3) Siemens/Intel multiplexed
SDR
SDR
SDX
SDX
Table
Bus Mode
header
header
6.
H
-7D
H
H
Parallel Microcontroller Interface
: Non-interleaved A-D-D-D Sequence
: Interleaved A-D-D-D Sequence
H
Bus Operation Modes
.The termination condition of the read access is the reception of the
rdadr
rdadr
H
-7D
rddata
rddata
H
rdadr
H
.The termination condition of the read access is the reception
) allows in front of the A-D-D-D write access an interleaved
H
) allows in front of the A-D-D-D write access a non-
rddata
wradr
rdadr
wrdata
rddata
22
V
V
Edge
(wradr)
Pin ALE
DD
SS
H
H
:
:
wrdata
wradr
(wradr)
Control Pins
CS, R/W, DS
CS, WR, RD
CS, WR, RD, ALE
wrdata
wrdata
(wradr)
(wradr)
Functional Description
PEF 82912/82913
wrdata
(wradr)
wrdata
(wradr)
2001-03-30