PSB3186FV1.4 Infineon Technologies, PSB3186FV1.4 Datasheet - Page 33
PSB3186FV1.4
Manufacturer Part Number
PSB3186FV1.4
Description
ISDN Interface ISDN
Manufacturer
Infineon Technologies
Datasheet
1.PSB3186FV1.4.pdf
(207 pages)
Specifications of PSB3186FV1.4
Control Type
HDLC
Data Rate
192 Kbps
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Operating Supply Voltage
3.3 V
Package / Case
MQFP-64
Lead Free Status / Rohs Status
Details
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3.2.2
The 8-bit parallel microcontroller interface with address decoding on chip allows easy
and fast microcontroller access.
The parallel interface of the ISAC-SX TE provides three types of P buses which are
selected via pin ALE. The bus operation modes with corresponding pins are listed in
Table
Table 5
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.
Note: If the multiplexed address/data bus type (3) is selected, the unused address pins
A read/write access to the ISAC-SX TE registers can be done in multiplexed or non-
multiplexed mode:
• In non-multiplexed mode the register address must be applied to the address bus (A0-
• In multiplexed mode the address on the address/data bus (AD0-AD7) is latched in by
The ISAC-SX TE provides two different ways to address the register contents which is
selected with the AMOD pin (’0’ = direct mode, ’1’ = indirect mode).
both register addressing modes.
Direct address mode (AMOD = ’0’): The register address to be read or written is directly
set in the way described above.
Indirect address mode (AMOD = ’1’): Only the LSB of the address is used to select
either the address register (A0 = ’0’) or the data register (A0 = ’1’). The microcontroller
writes the register address to the ADDRESS register before it reads/writes data from/to
the corresponding DATA register.
In indirect address mode the ISAC-SX TE evaluates no address line except the least
significant address bit. The remaining address lines must not be left open but have to be
tied to logical ’1’.
Data Sheet
(1) Motorola
(2) Siemens/Intel non-multiplexed
(3) Siemens/Intel multiplexed
A7) for the data access via the data bus (AD0-AD7).
ALE before a data read/write access via the same bus is performed.
Bus Mode
A0-A7 must be tied to V
5.
Parallel Microcontroller Interface
Bus Operation Modes
DD
.
33
V
V
Edge
Pin ALE
DD
SS
Description of Functional Blocks
Control Pins
CS, R/W, DS
CS, WR, RD
CS, WR, RD, ALE
Figure 7
PSB 3186
PSF 3186
2000-08-23
illustrates
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