DS26521 datasheet(129/258 Pages) MAXIM

129 / 258 page

DS26521 Single T1/E1/J1 Transceiver

129 of 258

RCR1 (T1 Mode)

Receive Control Register 1

081h

Bit #

Name

SYNCT

RB8ZS

RFM

ARC

SYNCC

RJC

SYNCE

RESYNC

Default

Note: This register has an alternate definition for E1 mode. See RCR1.

Bit 7: Sync Time (SYNCT).

0 = qualify 10 bits

1 = qualify 24 bits

Bit 6: Receive B8ZS Enable (RB8ZS).

0 = B8ZS disabled

1 = B8ZS enabled

Bit 5: Receive Frame Mode Select (RFM).

0 = ESF framing mode

1 = D4 framing mode

Bit 4: Auto Resync Criteria (ARC).

0 = resync on OOF or LOS event

1 = resync on OOF only

Bit 3: Sync Criteria (SYNCC).

In D4 Framing Mode:

0 = search for Ft pattern, then search for Fs pattern

1 = cross couple Ft and Fs pattern

In ESF Framing Mode:

0 = search for FPS pattern only

1 = search for FPS and verify with CRC6

Bit 2: Receive Japanese CRC-6 Enable (RJC).

0 = use ANSI:AT&T:ITU-T CRC-6 calculation (normal operation)

1 = use Japanese standard JT-G704 CRC-6 calculation

Bit 1: Sync Enable (SYNCE).

0 = auto resync enabled

1 = auto resync disabled

Bit 0: Resynchronize (RESYNC). When toggled from low to high, a resynchronization of the receive-side framer is

initiated. Must be cleared and set again for a subsequent resync.

DS26521 Datasheet(PDF) 129 Page - Maxim Integrated Products

DS26521 Datasheet(HTML) 129 Page - Maxim Integrated Products

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

Datasheet Download

Link URL