PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 273
PEF2091
Manufacturer Part Number
PEF2091
Description
ICs for Communications(ISDN Echocancellation Circuit)
Manufacturer
Siemens Semiconductor Group
Datasheet
1.PEF2091.pdf
(298 pages)
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8.7.2
The following 2 figures describe the read/write cycles and the corresponding address
timing for the serial microprocessor interface:
Figure 111
Figure 112
Semiconductor Group
CDOUT
CDIN
CS
CCLK
CS
CCLK
CDIN
CDOUT
Serial Microprocessor Interface Timing
Serial µP Interface Mode Write
Serial µP Interface Mode Read
0 A3 A2 A1 A0 X
1 A3 A2 A1 A0 X
t
t
CSs
CSs
t
CDINs
t
CDINh
HIGH ‘Z‘
HIGH ‘Z‘
273
t
t
X X
X X
P
P
t
CDOUTd
D7
D7
D6 D5 D4 D3 D2 D1D0
D6 D5 D4 D3 D2 D1 D0
Electrical Characteristics
t
CSh
t
CSh
Data Sheet 01.99
PEB 2091
PEF 2091
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