PEF82912FV1.4 Infineon Technologies, PEF82912FV1.4 Datasheet - Page 73

• Manufacturer Part Number: PEF82912FV1.4
• Description: ISDN Interface ISDN
• Manufacturer: Infineon Technologies

Specifications of PEF82912FV1.4

• Mounting Style: SMD/SMT
• Package / Case: MQFP-64
• Lead Free Status / Rohs Status: Details

2.3.6
The deactivation procedure of the IOM -2 interface is shown in Figure 31. After
detecting the code DI (Deactivation Indication) the Q-SMINT I responds by transmitting
DC (Deactivation Confirmation) during subsequent frames and stops the timing signals
after the fourth frame. The clocks stop at the end of the C/I-code in IOM -2 channel 0.
•
Figure 31
Conditions for Power-Down
If none of the following conditions is true, the IOM -2 interface can be switched off,
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 -2 interface or via IOM_CR.SPU)
• External pin EAW External Awake is low
• Bit MODE 1.CFS = ’0’
• Stop on the correct place in the IOM -2 frame. DCL must be low during power down
Data Sheet
(stop on falling edge of DCL) (see
a)
FSC
DIN
DOUT
b)
DCL
DIN
Activation/Deactivation of IOM
Deactivation of the IOM
DR
DI
D
DR
DI
C /
DC
DI
Figure
®
-2 Clocks
/ C
59
31).
DC
DI
®
-2 Interface
/ C
DC
DI
/ C
Detail see Fig.b
Functional Description
DC
DI
PEF 82912/82913
ITD10292
IOM -2 Interface
deactivated
IOM -2 Interface
deactivated
R
R
2001-03-30