DS26504LNB2 Maxim Integrated Products, DS26504LNB2 Datasheet - Page 53
DS26504LNB2
Manufacturer Part Number
DS26504LNB2
Description
Network Controller & Processor ICs T1-E1-J1-64kHz Compo 4kHz Composite Clock
Manufacturer
Maxim Integrated Products
Datasheet
1.DS26504L.pdf
(129 pages)
Specifications of DS26504LNB2
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Lead free / RoHS Compliant
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10. I/O PIN CONFIGURATION OPTIONS
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
HW
Mode
Bit 0: Output Data Format (ODF)
Bit 1: TS_8K_4 I/O Select (TSIO). This bit determines whether the TS_8K_4 pin is an input or and output. See
Bit 2: TS_8K_4 Mode Select (TSM). In T1 or E1 operation, selects frame or multiframe mode for the TS_8K_4 pin. In
6312kHz or 64KCC mode, this bit should be set = 0. See
Bit 3: Composite Clock Sync Mode_Transmit Signaling Double-Wide Sync (CSM_TSDW). In 64kHz Composite Clock
mode, this bit determines whether the TS_8K_4 pin is an 8kHz or a 400Hz reference input (TS_8K_4 pin in input mode,
IOCR1 = 0), or an 8kHz or 400Hz reference output (TS_8K_4 pin in output mode, IOCR1 = 1). In T1 mode, setting this bit =
1 and setting TSIO = 1 will cause the sync pulse output on TS_8K_4 to be two clocks wide during signaling frames. In E1 or
6312kHz mode, this bit should be set = 0. See
Bit 4: RLOF_CCE Output Function (RLOFF). In T1 or E1 receive mode, this bit determines the function of the
RLOF_CCE pin. In 64KCC or 6312kHz receive mode, this bit should be set = 0.
Bit 5: RS_8K Mode Select 1(RSMS1). In T1 or E1 receive mode, this bit selects a frame or multiframe output pulse at
RS_8K pin. IOCR.6 may be used to select other functions for the RS_8K pin.
Bit 6: RS_8K Mode Select 2 (RSMS2). In T1 and E1 receive mode, this bit along with IOCR.5 selects the function of the
RS_8K pin.
Bit 7: G.703 Timing Enable (G703TE). Setting this bit causes the 8kHz and 400Hz outputs to have timing relationships to
the 64kHz composite clock signal as specified in G.703. This bit allows backward compatibility with earlier devices in the
DS2650x family. Note: This applies to 64KCC modes only.
0 = bipolar data at TPOS and TNEG
1 = NRZ data at TPOS; TNEG = 0
0 = TS_8K_4 is an input
1 = TS_8K_4 is an output
0 = frame mode
1 = multiframe mode
0 = (CC64K) 8kHz reference, (T1) normal sync pulses
1 = (CC64K) 400Hz reference, (T1) double-wide sync pulses during signaling frames
0 = receive loss of frame (RLOF)
1 = loss-of-transmit clock (LOTC)
0 = frame mode
1 = multiframe mode
T1 Mode: (when IOCR.5 set = 0)
E1 Mode: (when IOCR.5 set = 1)
0 = legacy timing mode
1 = G.703 timing mode
0 = do not pulse double-wide in signaling frames
1 = do pulse double-wide in signaling frames
0 = RS_8K outputs CAS multiframe boundaries
1 = RS_8K outputs CRC4 multiframe boundaries
G703TE
7
0
0
RSMS2
IOCR1
I/O Configuration Register 1
01h
6
0
0
RSMS1
PIN 1
RSM
5
0
Table
10-1.
Table
RLOFF
53 of 129
4
0
0
10-1.
CSM_TSDW
3
0
0
PIN 2
TSM
TSM
2
0
TSIO
1
0
0
ODF
0
0
0
Table
10-1.
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