HFC-S2M Cologne Chip AG, HFC-S2M Datasheet - Page 202

• Manufacturer Part Number: HFC-S2M
• Description: Isdn HDLC Fifo Controller With Primary Rate Interface
• Manufacturer: Cologne Chip AG

HFC-E1
Only two FIFOs are used in this example. Channel select mode should be selected to avoid
unnecessary FIFO usage
data loop via the switching buffer (see Fig. 3.3 and 3.3).
are enabled, so that in Simple Mode all FIFOs with the same number are blocked.
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➊ A PCM conference member can be looped over an arbitrary HFC-channel. In this
➋ The settings for the second PCM conference member is quite similar.
➌ Finally the E1 conference member must loop back its data via the PCM interface.
1
Remember that in Simple Mode FIFO numbers are equal to HFC-channel numbers. In the example four HFC-channels
example HFC-channel[6,TX] is used for the first PCM conference member. The con-
ference is enabled only on the transmit time slot of the PCM interface.
This is normally done internally, i.e. the PCM output buffers are both disabled (see
Chapter 6 for details). A pair of FIFOs is used to configure the PCM-to-E1 connection
but no data is stored in these FIFOs.
A_SL_CFG[5,TX] : V_CH_DIR1
A_CONF[5,RX]
A_SL_CFG[20,TX] : V_CH_DIR1
A_CONF[20,TX]
A_SL_CFG[20,RX] : V_CH_DIR1
A_CONF[20,RX]
R_SLOT
A_CONF[5,TX]
R_SLOT
A_SL_CFG[5,RX] : V_CH_DIR1
R_SLOT
R_SLOT
1
. A PCM member allocates a single HFC-channel to establish the
Multiparty audio conferences
: V_SL_DIR
: V_SL_NUM
: V_CH_NUM1
: V_CONF_NUM
: V_CONF_SL
: V_SL_DIR
: V_SL_NUM
: V_CH_NUM1
: V_CONF_SL
: V_SL_DIR
: V_SL_NUM
: V_CH_NUM1
: V_CONF_NUM
: V_CONF_SL
: V_SL_DIR
: V_SL_NUM
: V_CH_NUM1
: V_CONF_SL
Data Sheet
1
0
0
5
6
1
20
1
6
0
0
0
5
6
2
1
0
20
1
6
2
1
(receive slot)
(transmit HFC-channel)
(disable conference)
(slot #5)
(HFC-channel #6)
(transmit slot)
(transmit HFC-channel)
(conference #2)
(slot #5)
(HFC-channel #6)
(enable conference)
(receive slot)
(slot #20)
(receive HFC-channel)
(HFC-channel #6)
(disable conference)
(transmit slot)
(slot #20)
(receive HFC-channel)
(HFC-channel #6)
(conference #2)
(enable conference)
March 2003 (rev. A)
Cologne
Chip