HFC-S2M Cologne Chip AG, HFC-S2M Datasheet - Page 103

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

March 2003 (rev. A)
HFC-E1
➊ FIFO-to-E1
➋ FIFO-to-PCM
As HFC-channel and FIFO numbers are the same, a selected E1 time slot specifies the
corresponding FIFO (and same in inverse, of course). There is no need of programming
this assigner.
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.
#12
#12
#13
#13
FIFOs
#9
#9
RX
RX
RX
TX
TX
TX
R_FIFO
A_CON_HDLC[9,TX] : V_DATA_FLOW
R_FIFO
A_CON_HDLC[9,RX] : V_DATA_FLOW
R_FIFO
A_CON_HDLC[13,TX] : V_DATA_FLOW
R_SLOT
A_SL_CFG[23,TX]
: V_FIFO_DIR
: V_FIFO_NUM
: V_FIFO_DIR
: V_FIFO_NUM
Figure 3.5: SM example
: 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
0
9
’100’
1
9
’100’
RX
RX
3
RX
TX
TX
TX
0
13
’011’
0
23
0
13
FIFO
(transmit FIFO)
(FIFO #9)
FIFO
(receive FIFO)
(FIFO #9)
(FIFO
(transmit FIFO)
(FIFO #13)
(transmit slot)
(slot #23)
(transmit HFC-channel)
(HFC-channel #13)
E1
E1
PCM)
PCM slot
E1 slot
#13 TX
#13
#12 TX
#12
#22 TX
#22
#23
#23
#9 TX
#9
RX
RX
RX
RX
RX
Cologne
Chip
TX
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