BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 242

• 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]

3.17 System Bus Registers
TFSLIP
TUSLIP
RSDIR
3-124
Controlled TSLIP Event—TUSLIP and TFSLIP event status are latched active-high when
transmit slip error is detected. Either event reports a TSLIP error in ISR5 [addr 006].
Active-high hold interval is defined by LATCH_ERR [addr 046].
Uncontrolled TSLIP Event—See TFSLIP description.
Receive Slip Direction—RSDIR is updated each time an RSLIP error is latched in RFSLIP or
RUSLIP, and indicates which direction the slip occurred.
Two types of errors are detected:
NOTE(S):
(1)
2. TFSLIP not applicable (read zero value) if TSLIP bypassed or configured as elastic
TSBI Mode
1.
2.
Most recent slip error direction is reported in TSDIR.
store. TUSLIP not applicable if TSLIP bypassed. In Short-Delay mode, if the bus
clock is faster than the receive clock, the system bus resynchronizes and USLIP is be
reported. If the receive clock is faster, RSLIP reverts to Normal mode and reports
FSLIP errors.
Normal
Bypass
Elastic
Short
FSLIP = Controlled frame slip on TX data output. FSLIP affects transmit
time slot data, but does not change the transmit timebase or frame
alignment.
USLIP = Uncontrolled 1 to 256 bit slip on TX data. USLIP affects both
time slot data and frame alignment. TUSLIP and TFSLIP status depends
on the transmit system bus configuration [TSB_CR; addr 0D4].
0 = RSLIP error deleted 1 frame on RPCMO or SBI resync detected
1 = RSLIP error repeated 1 frame on RPCMO or SBI time slot reassigned
TUSLIP
Conexant
N/A
0
1
1
0
1
1
0
0
0
TFSLIP
N/A
N/A
N/A
1
Fully Integrated T1/E1 Framer and Line Interface
0
1
0
0
1
0
(1)
Both FSLIP and USLIP
TSLIP Event
USLIP
USLIP
USLIP
FSLIP
FSLIP
none
none
none
Bt8370/8375/8376
—
N8370DSE