DS2143 datasheet(24/44 Pages) MAXIM

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DS2143/DS2143Q

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RS1 TO RS16: RECEIVE SIGNALING REGISTERS (Address=30 to 3F Hex)

(MSB)

(LSB)

0000

RS1 (30)

A(1)

B(1)

C(1)

D(1)

A(16)

B(16)

C(16)

D(16)

RS2 (31)

A(2)

B(2)

C(2)

D(2)

A(17)

B(17)

C(17)

D(17)

RS3 (32)

A(3)

B(3)

C(3)

D(3)

A(18)

B(18)

C(18)

D(18)

RS4 (33)

A(4)

B(4)

C(4)

D(4)

A(19)

B(19)

C(19)

D(19)

RS5 (34)

A(5)

B(5)

C(5)

D(5)

A(20)

B(20)

C(20)

D(20)

RS6 (35)

A(6)

B(6)

C(6)

D(6)

A(21)

B(21)

C(21)

D(21)

RS7 (36)

A(7)

B(7)

C(7)

D(7)

A(22)

B(22)

C(22)

D(22)

RS8 (37)

A(8)

B(8)

C(8)

D(8)

A(23)

B(23)

C(23)

D(23)

RS9 (38)

A(9)

B(9)

C(9)

D(9)

A(24)

B(24)

C(24)

D(24)

RS10 (39)

A(10)

B(10)

C(10)

D(10)

A(25)

B(25)

C(25)

D(25)

RS11 (3A)

A(11)

B(11)

C(11)

D(11)

A(26)

B(26)

C(26)

D(26)

RS12 (3B)

A(12)

B(12)

C(12)

D(12)

A(27)

B(27)

C(27)

D(27)

RS13 (3C)

A(13)

B(13)

C(13)

D(13)

A(28)

B(28)

C(28)

D(28)

RS14 (3D)

A(14)

B(14)

C(14)

D(14)

A(29)

B(29)

C(29)

D(29)

RS15 (3E)

A(15)

B(15)

C(15)

D(15)

A(30)

B(30)

C(30)

D(30)

RS16 (3F)

SYMBOL

POSITION

NAME AND DESCRIPTION

RS1.0/1/3

Spare Bits.

RS1.2

Remote Alarm Bit (integrated and reported in SR1.6).

A(1)

RS2.7

Signaling Bit A for Channel 1.

D(30)

RS16.0

Signaling Bit D for Channel 30.

Each Receive Signaling Register (RS1 to RS16) reports the incoming signaling from two timeslots. The

bits in the Receive Signaling Registers are updated on multiframe boundaries so the user can utilize the

Receive Multiframe Interrupt in the Receive Status Register 2 (SR2.7) to know when to retrieve the

signaling bits. The user has a full 2 ms to retrieve the signaling bits before the data is lost. The RS

registers are updated under all conditions. Their validity should be qualified by checking for

synchronization at the CAS level. In CCS signaling mode, RS1 to RS16 can also be used to extract

signaling information. Via the SR2.7 bit, the user will be informed when the signaling registers have been

loaded with data. The user has 2 ms to retrieve the data before it is lost.

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