bt8375kpf Conexant Systems, Inc., bt8375kpf Datasheet - Page 23

• 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
Table 1-1. Hardware Signal Definitions (4 of 8)
N8370DSE
RCKI
RPOSI
RNEGI
RCKO
RPOSO
RNEGO
RDLO
RDLCKO
Pin Label
RX Clock Input
RX Positive Rail Input
RX Negative Rail
Input
RX Clock Output
RX Positive Rail
Output
RX Negative Rail
Output
RX Data Link Output
RX Data Link Clock
Output
Signal Name
I
I
I
O
O
O
O
O
I/O
Digital Receiver (RCVR)
Line rate clock samples RPOSI and RNEGI when RLIU configured to
Line rate data input on falling edge of RCKI. RPOSI and RNEGI levels are
RPLL recovered line rate clock (RXCLK) or jitter attenuated clock (JCLK)
accept dual-rail digital data (see [RDIGI; addr 020]); otherwise, RCKI is
ignored.
interpreted as received AMI pulses, encoded as follows:
NOTE:
Line rate data input on falling edge of RCKI. See RPOSI signal definition.
output, based on programmed clock selection (see [JAT_CR; addr 002]).
Line rate data output on rising edge of RCKO. Active-high indicates receipt
of a positive AMI pulse on RTIP/RING inputs.
Line rate data output on rising edge of RCKO. Active-high indicates receipt
of a negative AMI pulse on RTIP/RING inputs.
Line rate NRZ data output from receiver on falling edge of RCKO, all data
from RLIU is represented at the RDLO pin. However, selective RDLO bit
positions are also marked by RDLCKO for external data link applications.
Gapped version of RCKO for external data link applications. RDLCKO high
clock pulse coincides with low RCKO pulse interval during selected time
slot bits, else RDLCKO low (see
Waveforms
Conexant
RPOSI
The NRZ data can be input at RPOSI or RNEGI if the
other input is connected to ground.
0
0
1
1
, External Data Link).
RNEGI
0
1
0
1
Definition
Figure 2-12, Receive External Data Link
No pulse
Negative AMI pulse
Positive AMI pulse
Invalid
RX Pulse Polarity
1.0 Pin Descriptions
1.1 Pin Assignments
1-7