PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 220

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Figure 48
Transmit Clock System
Note: DR = Dual Rail Interface
Framer/Synchronizer
The following functions are performed:
• Synchronization on pulse frame
• Synchronization on multiframe
• Error indication when synchronization is lost. In this case, AIS is automatically sent to
• Initiating and controlling of resynchronization after reaching the asynchronous state.
• Detection of remote alarm (yellow alarm) indication from the incoming data stream.
• Separation of service bits and data link bits. This information is stored in special status
• Detection of framed or unframed in band Loop Up/Down Code
• Generation of various maskable interrupt statuses of the receiver functions.
Semiconductor Group
the system side and Remote Alarm to the remote end if en/disabled.
This may be automatically done by the QuadFALC or user controlled via the
microprocessor interface.
registers.
XL1/
XDOP/
XOID
XL2/
XDON
XCLK
TCLK
(E1: 8MHz)
(T1: 6MHz)
MCLK
DCO-X Digital Controlled Oscillator Transmit
DR
DR
Clocking
Unit
D
÷ 4
Pulse Shaper
A
220
E1: 8MHz
T1: 6MHz
Attenuator
Transmit
DCO-X
Jitter
Framer
Functional Description T1 / J1
Transmit
Elastic
Store
Internal Clock of
Receive System
Interface
PEB 22554
SCLKR
SCLKX
TCLK
RCLK
ITS10305
XDI
09.98