3.0 Registers
Bt8370/8375/8376
3.6 Primary Control and Status Registers
Fully Integrated T1/E1 Framer and Line Interface
Table 3-7. Common TFSYNC and TMSYNC Configurations
Conditions
TFSYNC
TMSYNC
Explanation
Transmit framer disabled.
(TABORT = 1)
IN
IN-GND
IN
IN
IN
TSB timebase slaved to system bus TFSYNC or TMSYNC.
TSB timebase slaved to system bus TMSYNC. TFSYNC is unused.
IN-GND
TSB timebase slaved to system bus TFSYNC. TMSYNC is unused
and multiframe alignment is arbitrary.
IN
OUT
SB timebase slaved to system bus TFSYNC. TMSYNC alignment is
arbitrary.
OUT
OUT
OUT
IN
TSB timebase alignment is arbitrary.
TSB timebase slaved to system bus TMSYNC. TFSYNC aligns to
TMSYNC input.
Transmit framer enabled to
search TPCMI for
OUT
OUT
TSB timebase is aligned to embedded framing on TPCMI. TPCMI
must be configured to line rate for this case.
embedded framing.
(EMBED = 0, TABORT = 0)
Transmit framer enabled to
search TNRZ (after TSLIP
buffer) for embedded
framing. (EMBED = 1,
TABORT = 0)
OUT
IN-GND
TSB timebase is aligned to embedded framing on TNRZ data.
TMSYNC is unused. TPCMI may be configured for 1,544 kbps or a
multiple of 2,048 kbps.
Table 3-8. Common RFSYNC and RMSYNC Configurations
Conditions
RFSYNC
RMSYNC
Explanation
THRU = 0 [RSIG_CR;
addr 0D7]
IN
IN
IN
RSB timebase slaved to system bus RFSYNC or RMSYNC.
OUT
RSB timebase slaved to system bus RFSYNC. RMSYNC alignment
is arbitrary.
OUT
IN
RSB timebase slaved to system bus RMSYNC. RFSYNC aligns to
TMSYNC input.
OUT
IN
OUT
OUT
RFSYNC and RMSYNC alignment is arbitrary.
THRU = 1 [RSIG_CR;
addr 0D7]
RSB timebase slaved to system bus RFSYNC. RMSYNC is aligned
with the RX timebase and can follow a change of RX multiframe
alignment without generating an alarm indication.
OUT
OUT
RMSYNC is aligned with the RX timebase and can follow a change
of RX multiframe alignment without generating an alarm
indication. RFSYNC is aligned to RMSYNC.
3-34
Conexant
N8370DSE
CONEXANT [ CONEXANT SYSTEMS, INC ]
