PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 74

• Manufacturer Part Number: PEB3265
• Description: (PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
• Manufacturer: Infineon Technologies Corporation

Preliminary
3.10
Each DuSLIC channel has a three-party conferencing facility implemented which consist
of four PCM registers, adders and gain stages in the microprogram and the
corresponding control registers (see
This facility is available in PCM/ C mode only. The PCM control registers PCMR1
through PCMR4 and PCMX1 through PCMX4 control the timeslot assignment and PCM
highway selection, while the bits PCMX-EN, CONF-EN and CONFX-EN in the BCR3
register control the behavior of the conferencing facility and the PCM line drivers (see
Figure
voice data (B, C, D, S) in a range of – 6 dB to + 3 dB to prevent an overload of the sum
signals.
Figure 38
Note: G … Gain Stage (Gain Factor) set in CRAM coefficients,
Data Sheet
X1 - X4 … PCM transmit channels,
R1 - R4 … PCM receive channels,
A, B, C, D, S … examples for voice data on PCM channels X1 - X4, R1 - R4
38). A programmable gain stage G is able to adjust the gain of the conferencing
PCM channel
Subscribers
Three-party Conferencing (only DuSLIC-E/-E2/-P)
Conference Block for One DuSLIC Channel
X4
PCM Highways
X1
X3
+
-
CONF_EN = 0
X2
+
G
1
-
Subscriber S
0
Figure
R4
D
R2
B
G
74
38).
R3
+
C
G
-
1
CONF_EN = 0
0
R1
A
X2 = (R3 – R4)*G
X3 = (R2 – R4)*G
X4 = (R2 – R3)*G
Functional Description
ezm14069.emf
2000-07-14
DuSLIC