pef82902 Infineon Technologies Corporation, pef82902 Datasheet - Page 23

• Manufacturer Part Number: pef82902
• Description: 4b3t Second Generation Modular Isdn Nt Intelligent Extended
• Manufacturer: Infineon Technologies Corporation

Table 2
Data Sheet
Pin
28
28
21
22
23
24
25
36
37
38
39
40
53
54
11
Pin Definitions and Functions (cont’d)
Symbol
SDX
AD7
AD0
AD1
AD2
AD3
AD4
A0
A1
A2
A3
A4
A5
A6
RD
DS
Type
OD/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
I
Function
Serial Data Transmit:
Transmit data line of the SCI interface if a serial
interface is selected
Multiplexed Bus Mode:
Address/data bus
Address/data line AD7 if the parallel interface is
selected
Non-Multiplexed Bus Mode:
Data bus
Data line D7 if the parallel interface is selected
Multiplexed Bus Mode:
Address/data bus
Transfers addresses from the microcontroller to
the T-SMINT
microcontroller and the T-SMINT
Non-Multiplexed Bus Mode:
Data bus.
Transfers data between the microcontroller and
the T-SMINT
Non-Multiplexed Bus Mode:
Address bus transfers addresses from the
microcontroller to the T-SMINT
address mode only A0 is valid.
Multiplexed Bus Mode
Not used in multiplexed bus mode. In this case
A0-A6 should directly be connected to VDD.
Read
Indicates a read access to the registers (Intel
bus mode).
Data Strobe
The rising edge marks the end of a valid read or
write operation (Motorola bus mode).
9
â
â
IX and data between the
IX (data lines D0-D4).
â
IX. For indirect
â
IX.
PEF 81902
2001-11-12
Overview