W6691CD WINBOND [Winbond], W6691CD Datasheet - Page 24

• Manufacturer Part Number: W6691CD
• Description: ISDN S/T Interface Transceiver
• Manufacturer: WINBOND [Winbond]

Preliminary W6691
2:1
8.2k
1.8k
SR1
100
VDD
GND
8.2k
1.8k
SR2
Fig.7.4 External Receiver Circuitry
After hardware reset, the receiver may enter power down state in order to save power consumption. In this
state, the internal clocks are turned off, but the analog level detector is still active to detect signal coming from
the S interface. The power down state is left either by non-INFO 0 signal from S interface or C/I command from
microprocessor.
Publication Release Date: Sep 2001
24
Revision 1.1