PEF 24470 H V1.3 Infineon Technologies, PEF 24470 H V1.3 Datasheet - Page 40

• Manufacturer Part Number: PEF 24470 H V1.3
• Description: IC MTSI-XL SWITCHING MQFP100
• Manufacturer: Infineon Technologies
• Series: SWITIr

Specifications of PEF 24470 H V1.3

• Function: Switching IC
• Interface: PCM, PLL
• Number Of Circuits: 1
• Voltage - Supply: 3.13 V ~ 3.47 V
• Current - Supply: 200mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-SQFP
• Includes: Clock Shift, Data Rate Adaption, Multipoint Switching
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEF24470HV1.3X; SP000007617

PRELIMINARY
4.3
A standard 8-bit multiplexed or non-multiplexed µP interface is provided. It is compatible
to Intel/Siemens (e.g. 80386EX, C166) or Motorola (e.g. 68040, 68340, 68360, 801) bus
systems. If the GPIO port is not needed it can be used to provide a 16-bit µP interface.
The 16-bit mode is determined according to MODE16 input pin.
MODE16 = ’0’ -> 8-bit interface
MODE16 = ’1’ -> 16-bit interface
This chapter describes how to configure the µP interface to each mode.
4.3.1
The Intel/Siemens or Motorola mode for the µP interface can be configured during the
hardware reset process in conjunction with the ALE pin.
– ALE permanently driven to ’low’ => Motorola mode
– ALE permanently driven to ’high’ => Intel/Siemens mode
– Edge on ALE => Intel/Siemens multiplexed mode
A falling or rising edge on ALE during the normal operation selects the multiplexed mode
immediately. With the hardware reset and the tied ALE pin it is possible to return to the
Motorola or Intel/Siemens mode.
4.3.2
In both modes, the A-bus and the D-bus are used in parallel. The A-bus should be
connected to the LSBs of AD-bus, coming from the µP, also in multiplexed mode.
The next figure describes the connection to the address and data buses in the different
modes.
Note: Motorola mode is used only with de-multiplexed AD bus. Intel/Siemens mode may
Preliminary Data Sheet
be used with both, multiplexed or de-multiplexed AD bus.
Microprocessor Interface
Intel/Siemens or Motorola Mode
De-multiplexed or Multiplexed Mode
31
PEF 20450 / 20470 / 24470
Description of Interfaces
2001-11-20