PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 53

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

Table 4
Test-Mode
Master-Reset
Send Single-Pulses
Data-Through
Normal Operation
1) Used for Quiet Mode and Return Loss measurements
2) Used for Pulse Mask measurements
3) Used for Insertion Loss, Power Spectral Density and Total Power measurements
3.2.3
Mode setting of pin DOUT will be given in the following two tables
Table 5
Mode
Normal
(Tristate)
Normal
(Open Drain
1) Refer to Notes 10, page 72, 12, page 72, and 15, page 73 for explanation about active and passive channels
2) External pull-up resistors required (typ.1 k )
3.2.4
Note 3:
Semiconductor Group
This mode setting is only available in the master mode of the IEC-Q, i.e.
modes in which the IOM
DOUT Driver Modes
IOM
2)
1)
3)
Setting Test Modes
Setting DOUT Driver in Stand-Alone Mode
)
®
-2 Enable/Disable Mode
2)
Pin
RES
1
1
Mode Selection
Stand-Alone Mode/µP Mode
Pin RES/
Bit TM1
0
1
0
1
Pin
TSP
0
0
®
Pin
DOD
0
1
-2 clocks FSC and DCL are delivered by the
53
Pin DOUT Output Driver
Value
0
1
0
1
Pin TSP/
Bit TM2
0
1
1
0
DOUT in
active IOM
Channel
low
high
low
floating
Functional Description
1)
®
-2
Data Sheet 01.99
DOUT in
passive
IOM
Channel
high Z
floating
PEB 2091
PEF 2091
®
-2
1)