DS26503LN datasheet(52/123 Pages) DALLAS

52 / 123 page

DS26503 T1/E1/J1 BITS Element

52 of 123

10. I/O PIN CONFIGURATION OPTIONS

IOCR1

I/O Configuration Register 1

01h

Bit #

Name

—

RSMS2

RSMS1

RLOFF

TSDW

TSM

TSIO

ODF

Default

Mode

RSM

PIN 1

TSM

PIN 2

Bit 0/Output Data Format (ODF).

0 = bipolar data at TPOS and TNEG

1 = NRZ data at TPOS; TNEG = 0

Bit 1/TS I/O Select (TSIO). This bit determines whether the TS pin is an input or and output. See Table 10-1.

0 = TS is an input

1 = TS is an output

Bit 2/TS Mode Select (TSM). In T1 or E1 operation, selects frame or multiframe mode for the TS pin. In 6312kHz mode, this

bit should be set = 0. See Table 10-1.

0 = frame mode

1 = multiframe mode

Bit 3/Transmit Signaling Double-Wide Sync (TSDW). In T1 mode, setting this bit = 1 and setting TSIO = 1 will cause the

sync-pulse output on TS to be two clocks wide during signaling frames. In E1 or 6312kHz mode, this bit should be set = 0. See

Table 10-1.

0 = (T1) normal sync pulses

1 = (T1) double-wide sync pulses during signaling frames

Bit 4/ RLOF Output Function (RLOFF). In T1 or E1 receive mode this bit determines the function of the RLOF pin. In

6312kHz receive mode, this bit should be set = 0.

0 = receive loss of frame (RLOF)

1 = loss-of-transmit clock (LOTC)

Bit 5/RS Mode Select 1(RSMS1). In T1 or E1 receive mode, this bit selects a frame or multiframe output pulse at RS pin.

IOCR.6 may be used to select other function for the RS pin.

0 = frame mode

1 = multiframe mode

Bit 6/RS Mode Select 2 (RSMS2). In T1 and E1 receive mode, this bit along with IOCR.5 selects the function of the RS pin.

T1 Mode: (when IOCR.5 set = 0)

0 = do not pulse double-wide in signaling frames

1 = do pulse double-wide in signaling frames

E1 Mode: (when IOCR.5 set = 1)

0 = RS outputs CAS multiframe boundaries

1 = RS outputs CRC4 multiframe boundaries

Bit 7/Unused, must be set = 0 for proper operation

DS26503LN Datasheet(PDF) 52 Page - Dallas Semiconductor

DS26503LN Datasheet(HTML) 52 Page - Dallas Semiconductor

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