PSB7230 Datasheet, PDF (76/179 Pages) Siemens Semiconductor Group – Joint Audio Decoder-Encoder for Analog Videophone JADE AN

PSB 7230
C/I Channel Data Transfer
The block diagram of the C/I channel handler is shown below.
Functional Blocks
C/I channels 1,2:
CIC int status Read ^{DSP or}
Host
DCL(/2)
FSC
CIL CICH
14
Time-slot
Count
Logic
CIEN Strobe
DLL
Load
*)
CIR
Compare
logic
Previous
Current
Clock
6
6 bits
Shift Register
Load
6 bits
Shift Register
0
6
CIX
DSP or
Host
SLIN
1
M0
DD
U
X1
DU
0M
U
1X
AWK
M0
DU
U
X1
DD
11
SLIN CIEN*Strobe+AWK
Figure 36
*) Read of the old changed value is the condition of loading of a new changed value.
Thus, when several changes occur before the first changed value has been read, only
the first and the last change are available.
Semiconductor Group
76
Data Sheet 1998-07-01