HFC-4S Cologne Chip AG, HFC-4S Datasheet - Page 103

• Manufacturer Part Number: HFC-4S
• Description: Isdn HDLC Fifo Controller With 8 (4) Integrated S/t Interfaces
• Manufacturer: Cologne Chip AG

March 2003 (rev. A)
HFC-4S
HFC-8S
➋
➌
FIFO-to-PCM
The FIFO-to-PCM connection can use different numbers for the involved HFC-channels and
PCM time slots. The desired numbers are linked together in the PCM slot assigner.
PCM-to-S/T
A direct PCM-to-S/T coupling is shown in the last connection set. FIFO[12,TX] and FIFO[12,RX]
contain the data flow settings, so they must be configured and enabled to switch on the data
transmission.
#12
#12
#13
#13
FIFOs
#9
#9
RX
RX
RX
TX
TX
TX
R_FIFO
A_CON_HDLC[13,TX] : V_DATA_FLOW
R_SLOT
A_SL_CFG[23,TX]
R_FIFO
A_CON_HDLC[13,RX] : V_DATA_FLOW
R_SLOT
A_SL_CFG[23,RX]
Figure 3.5: SM example
: V_FIFO_DIR
: V_FIFO_NUM
: V_SL_DIR
: V_SL_NUM
: V_CH_DIR1
: V_CH_NUM1
: V_FIFO_DIR
: V_FIFO_NUM
: V_SL_DIR
: V_SL_NUM
: V_CH_DIR1
: V_CH_NUM1
2
1
Data Sheet
HFC-channel
Data flow
#12
#12
#13
#13
#9
#9
3
RX
RX
RX
TX
TX
TX
0
13
’011’
0
23
0
13
’001’
1
13
1
23
1
13
(FIFO
(transmit FIFO)
(FIFO #13)
(transmit slot)
(slot #23)
(transmit HFC-channel)
(HFC-channel #13)
(FIFO
(receive FIFO)
(FIFO #13)
(receive slot)
(slot #23)
(receive HFC-channel)
(HFC-channel #13)
PCM)
PCM)
S/T interf.
PCM slot
#2
#2
#3
#3
#3
#3
#22 TX
#22
#23
#23
B2
B2
B2
B2
B1
B1
RX
RX
Cologne
Chip
TX
RX
RX
RX
TX
TX
TX
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