pef82902 Infineon Technologies Corporation, pef82902 Datasheet - Page 71

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

•
Figure 30
Conditions for Power-Down
If none of the following conditions is true, the IOM
reducing power consumption to a minimum.
• S-transceiver is not in state ’Deactivated’
• Signal INFO0 on the S-interface
• Uk0-transceiver is not in state ’Deactivated’
• Pin DU is low (either at the IOM
• External pin EAW External Awake is low
• Bit MODE 1.CFS = ’0’
• Stop on the correct place in the IOM
A deactivated IOM
• Pulling pin DU line low:
• Pulling pin EAW ‘External Awake‘ low
• Setting ‘Configuration Select‘ MODE1:CFS bit = ’0’
• Level detection at the S-interface
• Activation from the U-interface
Data Sheet
(stop on falling edge of DCL) (see
– directly at the IOM
– via the µP interface with "Software Power Up" (IOM_CR:SPU bit)
a)
FSC
DIN
DOUT
b)
DCL
DIN
Deactivation of the IOM
DR
DI
â
-2 can be reactivated by one of the following methods:
D
â
-2 interface
DR
DI
C /
â
-2 interface or via IOM_CR.SPU)
DC
DI
Figure
â
®
-2 frame. DCL must be low during power down
-2 Clocks
/ C
57
30).
DC
DI
/ C
â
-2 interface can be switched off,
DC
DI
/ C
Detail see Fig.b
Functional Description
DC
DI
ITD10292
IOM -2 Interface
deactivated
IOM -2 Interface
deactivated
R
R
PEF 81902
2001-11-12