BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 241

• 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]

Bt8370/8375/8376
Fully Integrated T1/E1 Framer and Line Interface
OFFSET[14:10]
SSTAT[7:0] is updated at the start of each respective receive/transmit internal frame boundary (i.e., 125 s
interval). Each bit in SSTAT is latched upon event detection and held until cleared by a processor read.
TSDIR
N8370DSE
0D8—Signaling Reinsertion Frame Offset (RSYNC_FRM)
0D9—Slip Buffer Status (SSTAT)
TSDIR
—
7
7
RSB Sync Frame Offset—Selects which RSB frame number coincides with an RMSYNC
pulse in the range of frame 0–23. OFFSET specifies the frame in which RMSYNC is applied
as an input, or in which RMSYNC appears as an output—consequently locating RPCMO
signaling frames used for T1 robbed-bit (frames 6,12,18, and 24), or E1 CAS signaling
reinsertion. The only RPCMO channels affected are those with signaling insertion enabled
[INSERT; addr 0E0–0FF].
Transmit Slip Direction—TSDIR is updated each time a TSLIP error is latched in TFSLIP, and
TSDIR indicates which direction the slip occurred.
TFSLIP
—
6
6
TUSLIP
—
5
5
T1/E1N
0 = TSLIP error deleted 1 frame on TX data output
1 = TSLIP error repeated 1 frame on TX data output
0
0
0
0
1
1
1
1
|
|
OFFSET[14]
—
4
4
OFFSET[14:10]
Conexant
X0000
X0001
X1110
X1111
00000
00001
10110
10111
|
|
OFFSET[13]
RSDIR
3
3
RMSYNC Pulse
RSB Frame 14
RSB Frame 15
RSB Frame 23
RSB Frame 24
RSB Frame 0
RSB Frame 1
RSB Frame 1
RSB Frame 2
OFFSET[12]
RFSLIP
2
2
|
|
OFFSET[11]
RUSLIP
3.17 System Bus Registers
1
1
OFFSET[10]
—
0
0
3-123