BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 293
BT8375
Manufacturer Part Number
BT8375
Description
single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8375.pdf
(323 pages)
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Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
Figure 5-16. SBI Timing—2048K Mode
N8370DSE
NOTE(S):
1. TSYNC/RSYNC represents frame (TFSYNC/RFSYNC) and multiframe (TMSYNC/RMSYNC) offset.
2. RINDO/TINDO programmed high or low on a per-time slot basis (SBCn; addr 0E0-0FF).
3. Multiple offset values shown for illustration, refer to OFFSET controls (addr 0D2-0D3, 0D5-0D6).
4. Rising edge outputs and falling edge inputs shown. Refer to
5. Transmit ABCD signalling on TSIGI is sampled only during low nibble.
6. Received ABCD signalling on RSIGO is repeated in both high and low nibbles.
7. X2CLK control bit located in SBI_CR (addr 0D0).
Transmit
TSBCKI
TSYNCO
TSYNCI
TSYNCO
TSYNCI
TSYNCO
TSYNCI
TPCMI
TSIGI
TINDO
TSBCKI
TSYNCO
TSYNCI
TSYNCO
TSYNCI
(5)
(2)
(1)
(1)
Receive
RSBCKI
RSYNCO
RSYNCI
RSYNCO
RSYNCI
RSYNCO
RSYNCI
RPCMO
RSIGO
RINDO
SIGFRZ
RSBCKI
RSYNCO
RSYNCI
RSYNCO
RSYNCI
(6)
(2)
(1)
(1)
A B C D
5 6 7 8
TS31
TSIG31
Conexant
Offset = 000
Offset = 000 (TS0, Bit1)
Offset = 0FF
A B C D
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4
Figure 5-19
TS0
(3)
(3)
A B C D
TSIG0
for other edge combinations.
(3)
A B C D
5.0 Electrical/Mechanical Specifications
5.6 System Bus Interface (SBI) Timing
TS1
Offset = 00B
Offset = 00B
A B C D
TSIG1
A B C D
TS2
5-19
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