DS2181A View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
Manufacturer
DS2181A Datasheet PDF : 32 Pages
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SERIAL PORT READ/WRITE Figure 3
DS2181A
NOTES:
1. SDI sampled on rising edge of SCLK.
2. SDO updated on falling edge of SCLK.
TCR: TRANSMIT CONTROL REGISTER Figure 4
(MSB)
TUA1
TSS
TSM
INBS
NBS
XBS
TSA1
(LSB)
ODM
SYMBOL
TUA1
TSS
TSM
INBS
NBS
XBS
TSA1
ODM
POSITION
TCR.7
TCR.6
TCR.5
TCR.4
TCR.3
TCR.2
TCR.1
TCR.0
NAME AND DESCRIPTION
Transmit Unframed All 1’s.
0 = Normal operation.
1 = Replace outgoing data at TPOS and TNEG with unframed all
1’s code.
Transmit Signaling Select1
0 = Signaling data embedded in the serial bit stream is sampled at
TSER during timeslot 16.
1 = Signaling data is channel associated and sampled at TSD as
shown in Table 6.
Transmit Signaling Mode1
0 = Channel Associated Signaling (CAS).
1 = Common Channel Signaling (CCS).
International Bit Select
0 = Sample international bit at TIND.
1 = Outgoing international bit = TINR.7.
National Bit Select
0 = Sample national bits at TIND.
1 = Source outgoing national bits from TINR.4 through TINR.0.
Extra Bit Select
0 = Sample extra bits at TXD.
1 = Source extra bits from TXR.0 through TXR.1 and TXR.3.
Transmit Signaling All 1’s
0 = Normal operation.
1 = Force contents of timeslot 16 in all frames to all 1’s.
Output Data Mode
0 = TPOS and TNEG outputs are 100% duty cycle.
1 = TPOS and TNEG outputs are 50% duty cycle.
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