BT8370KPF

Manufacturer Part NumberBT8370KPF
DescriptionFully integrated T1/E1 framer and line interface
ManufacturerConexant Systems, Inc.
BT8370KPF datasheet
 


Specifications of BT8370KPF

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2.0 Circuit Description
2.5 Receive System Bus
2.5 Receive System Bus
The Receive System Bus (RSB) provides a high-speed, serial interface between
the RCVR and the system bus. The system bus is compatible with the Mitel
ST-Bus, the Siemens PEB Bus, and the AT&T CHI Bus, and directly connects to
other CONEXANT serial TDM bus devices with no need for any external
circuitry.
The RSB has the following seven pins: Receive System Bus Clock (RSBCKI),
Receive PCM Data (RPCMO), Receive Signaling Data (RSIGO), Receive Frame
Sync (RFSYNC), Receive Multiframe Sync (RMSYNC), Receive Time Slot
Indicator (RINDO), and Signaling Freeze (SIGFRZ).
relationship between these signals. (Pin definitions are provided in
Table 1-1, Hardware Signal
output on the rising or falling edge of RSBCKI. See the Receive System Bus
Configuration register [RSB_CR; addr 0D1].
Figure 2-15. RSB Waveforms
RSBCKI
Frame 48 TS 31
1
2
3
RPCMO
RINDO
A
B
C
RSIGO
Frame 48 TS 24
1
2
3
RPCMO
RINDO
A
B
C
RSIGO
SIGFRZ
RFSYNC
RMSYNC
The Receive Multiframe Sync (RMSYNC) occurs every 6 ms for 48 T1 or 48 E1 frames.
NOTE(S):
2-32
Fully Integrated T1/E1 Framer and Line Interface
Definitions.) RSB data outputs can be configured to
Frame 1 TS 0
4
5
6
7
8
1
2
3
D
A
B
C
D
A
B
C
Frame 1 TS 1
4
5
6
7
8
F
1
2
D
A
B
C
D
X
A
B
Conexant
Bt8370/8375/8376
Figure 2-15
illustrates the
4
5
6
7
8
1
2
D
A
B
C
D
A
B
3
4
5
6
7
8
1
C
D
A
B
C
D
A
N8370DSE