PEF2054 SIEMENS [Siemens Semiconductor Group], PEF2054 Datasheet - Page 145

• Manufacturer Part Number: PEF2054
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Figure 53 illustrates this behavior.
Figure 53
Write Access to the Control Memory Data and Code Fields
For reading back the CM code field, the command MACR:MOC = 111X is also used, the
value of CMC3 … 0 being don’t care. The code field value can then be read from the
lower 4 bits of MADR.
Semiconductor Group
MACR:
Up-
stream
Down-
stream
0
CFI
Frame
1
0
0
127
127
1
1
Code Field
CMC
3
...
0
Control Memory
MADR:
MD7
.
145
Data Field
.
.
.
.
.
MD0
MAAR:
U/D = 1
U/D = 0
U/D
MA6
Application Hints
.
.
.
PEB 2055
PEF 2055
.
ITD08068
. MA0