peb20550 Infineon Technologies Corporation, peb20550 Datasheet - Page 140
peb20550
Manufacturer Part Number
peb20550
Description
Extended Pcm Interface Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20550.pdf
(269 pages)
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The MADR bits MD7 … MD0 control the PCM time slot bit positions 7 … 0 in the
following way:
MD7 … MD4 are not used (don’t care);
MD3 … MD0 select between the states high impedance (MD# = 0) or low impedance
(MD# = 1)
time slot Bit Position:
MADR Bits:
The Procedure for Writing to a Single PCM Tristate Field is
W:MADR
W:MAAR
48
W:MACR
The Procedure for Reading Back a (Single) PCM Tristate Field Location is
W:MAAR
W:MACR
wait for STAR:MAC = 0
R:MADR
The Procedure for Writing to all PCM Tristate Field Positions is
W:MADR
W:MACR
1)
Semiconductor Group
The U/D bit of MAAR will implicitly be set to 1.
= X X X X MD3 MD2 MD1 MD0
= address of the desired (upstream)
= 0110 000
= address of the desired (upstream)
= E0
= X X X X MD3 MD2 MD1 MD0
= X X X X MD3 MD2 MD1 MD0
= 0110 1000
H
B
7
B
= 60
MD3
= 68
H
H
6
5
140
MD2
B
B
B
1)
4
1)
PCM time slot according to figure 48
PCM time slot according to figure
3
MD1
2
Application Hints
1
PEB 2055
PEF 2055
MD0
0
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