PEB 2091
PEF 2091
Pin Descriptions
2.2.2
Pin Definition in Microprocessor Mode
(i.e. PMODE="1")
Pin No.
P-LCC-44 T-QFP64
M-QFP64
Pin No.
Symbol Input (I)
Output (O)
Function
2.2.2.1 Mode Selection Pins
12
24
PMODE I
Processor Interface Enable: PMODE
must be set to "1" to enable the
Processor Interface (Multiplexed,
demultiplexed and serial modes).
Tie to GND or do not connect to select
stand-alone mode, see "Pin Definition
in Stand-Alone Mode", page 33.
Internal pull down.
28
47
RES
I
Reset: Low active, must be (0) at least
for 30 ns, (see Table 4, page 53 for
complete description of available mode
configurations with this pin. The reset
in the LT and NT-PBX mode will be
carried out only after the IOM®-2
clocks have been applied to the IEC-Q.
Tie to VDD if not used.
2.2.2.2 Data, Address and µP Selection Pins
24
43
SMODE I
Serial mode pin: SMODE = 1 selects
serial mode, SMODE = 0 enables the
multiplexed mode.
A0
Address bus pin (Demultiplexed
mode).
SMODE
(Multiplexed mode) tie to GND
36
59
CDIN
I
Controller Data In (Serial mode): CCLK
determines the data rate.
A1
Address bus pin (Demultiplexed
mode).
not used
(Multiplexed mode) tie to GND.
Semiconductor Group
40
Data Sheet 01.99
INFINEON [ Infineon ]
