BT8376EPF datasheet(209/323 Pages) CONEXANT

209 / 323 page

Bt8370/8375/8376

Fully Integrated T1/E1 Framer and Line Interface

3.16 Data Link Registers

N8370DSE

Conexant

3-91

3.16 Data Link Registers

Unused bits indicated by a dash (—) are reserved and should be written to 0. Writing to reserved bits has no

effect.

The Bt8370 and Bt8375 contain two independent Data Link Controllers (DL1, DL2) that are programmed to

send and receive HDLC formatted or unformatted serial data over any combination of bits within a selected time

slot. The serial data channels operate at a multiple of 4 kbps, up to the full 64 kbps time slot rate, by selecting a

combination of time slot bits from odd, even, or all frames. DL1 and DL2 each contain a 64-byte receive and

64-byte transmit buffer which function as programmable length circular buffers or as full-length data FIFOs.

The Bt8376 device contains only a single controller, DL1.

0A4—DL1 Time Slot Enable (DL1_TS)

DL1_TS[7]

Unchannelized—Test mode only, all time slots selected. Zero for normal operation.

DL1_TS[6, 5]

Frame Select—Transmit and receive data link 1 operates on data only during specified T1/E1

frames. Frame select options give the processor access to different types of data link channels

and overhead channels. Overhead bit insertion is performed after TDL1, so internal transmitter

overhead insertion must be bypassed [TFRM; addr 072] before processor-supplied overhead

can be output from TDL1.

00 = all frames

01 = even frames only

10 = odd frames only

11 = reserved

DL1_TS[4:0]

Time Slot Word Enable—Transmit and receive data link 1 operates on data only during the

specified time slot. During T1 mode, selecting time slot 0 enables data link operation on the

F-bit positions.

DL1_TS[7]

DL1_TS[6]

DL1_TS[5]

DL1_TS[4]

DL1_TS[3]

DL1_TS[2]

DL1_TS[1]

DL1_TS[0]

DL1_TS[4:0]

Time slot Enable

00000

F-bit (T1) or TS0 (E1)

00001

TS1

11110

TS30

11111

TS31

BT8376EPF Scheda tecnica(PDF) 209 Page - Synaptics Incorporated.

BT8376EPF Scheda tecnica(HTML) 209 Page - Synaptics Incorporated.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL