pef80913 Infineon Technologies Corporation, pef80913 Datasheet - Page 27
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pef80913
Manufacturer Part Number
pef80913
Description
2b1q Second Gen. Modular Isdn Nt
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEF80913.pdf
(240 pages)
- Current page: 27 of 240
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Table 2
1)
I: Input
O: Output (Push-Pull)
OD: Output (Open Drain)
1.7.1
LED Pin ACT
A LED can be connected to pin ACT to display four different states (off, slow flashing,
fast flashing, on). It displays the activation status of the U- and S-transceiver according
to
Table 3
Pin ACT
V
8Hz
1Hz
GND
with:
U_Deactivated: ’Deactivated State’ as defined in
State Machine‘ is selected: ’Deactivated State’ and ‘IOM -2 Awaked‘.
U_Activated: ’Synchronized 1’, ’Synchronized 2’, ’Wait for ACT’, ’Transparent’, ’Error S/
T’, ’Pend. Deact. S/T’, ’Pend. Deact. U’ as defined in
S-Activated: ’Activated State’ as defined in
Note: Optionally, pin ACT can drive a second LED with inverse polarity (connect this
Data Sheet
DD
This function of pin EAW is different to that defined in Ref. [14]
Table
additional LED to 3.3 V only).
3. or it is programmable via two bits (LED1 and LED2 in register MODE2).
Pin
50
56, 57,
58
Pin Definitions and Functions (cont’d)
Specific Pins
ACT States
LED
off
8Hz
1Hz
on
Symbol
TP2
res
U_Deactivated
1
0
0
0
Type
I
Function
Test Pin 2.
Used for factory device test.
Tie to V
Reserved
13
Chapter
U_Activated
x
0
1
1
SS
Chapter
2.5.5.
Chapter
2.4.10.5. If the ‘Simplified
2.4.10.5.
PEF 82912/82913
S_Activated
x
x
0
1
2001-03-30
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