bt8375kpf Conexant Systems, Inc., bt8375kpf Datasheet - Page 221

• Manufacturer Part Number: bt8375kpf
• Description: Single Chip Transceivers For T1/e1 And Integrated Service Digital Network Isdn Primary Rate Interfaces Systems
• Manufacturer: Conexant Systems, Inc.

Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
N8370DSE
bit transmitted is supplied by the processor through TDL2, and each bit received is passed to
the processor through RDL2 [addr 0B3]. Pack8 and Pack6 unformatted mode options select
the number of bits per byte that are stored in transmit/receive FIFOs, 8 or 6 bits, respectively.
In T1 modes, only Pack6 is applicable. In E1, unformatted mode cannot be used if
FAS_MFAS-CAS receive framing is configured. The only data processing performed during
unformatted mode is the alignment of transmitted data bits with respect to the receive and
transmit multiframe. Please see the valid modes for Pack8 and Pack6 in the table shown below.
Unformatted data link modes provide transparent channel access in which every data link
The following initializations are required when Pack8 or Pack6 is selected:
If (Dlink mode == Pack8 or PACK6)
PACK8 and PACK6 would be applicable for the following applications:
{
}
CR0.T_E1N
CR0.RFRAME
DL1_1CTL.DL
DL1_TS.FRAME
DL1_TS, DL_TS
DL1_BIT, DL_BIT
Configuration
DL_TEST[1] = 0x03
TEST
DL_TEST[5] = 0x60
DL_TEST[5] = 0x10
TDL2
TDL2_EOM
TEST
00 = HDLC with FCS
01 = HDLC without FCS
10 = Unformatted Pack8
11 = Unformatted Pack6
= 0x02
= 0x0
= 0x0
= 0x0
Conexant
E1
FAS
FAS_MFAS
FAS_CAS
PACK8
ODD,
EVEN
Any
Two bits or more
1
** The value DL_TEST[1] = 0x2 is for DLINK#1,
and 0x3 is for DLINK#2.
** DL_TEST[4] is for DLINK #1
** DL_TEST[5] is for DLINK #2
E1
Any
FAS
FAS_MFAS
FAS_CAS
PACK8
ALL FRAMES
Any
2
3.16 Data Link Registers
T1
Any
PACK6
ALL FRAMES
ODD,
EVEN,
EVERY_
OTHER_
Even
Any
Any
3
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