DS21Q43-ATN Maxim Integrated Products, DS21Q43-ATN Datasheet - Page 37

• Manufacturer Part Number: DS21Q43-ATN
• Description: IC FRAMER E1 QUAD 5V 128-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q43-ATN

• Controller Type: E1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 32mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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.
TS1 TO TS16: TRANSMIT SIGNALING REGISTERS (Address=40 to 4F Hex)
(MSB)
Each Transmit Signaling Register (TS1 to TS16) contains the CAS bits for two timeslots that will be
inserted into the outgoing stream if enabled to do so via TCR1.5. On multiframe boundaries, the
DS21Q43A will load the values present in the Transmit Signaling Register into an outgoing signaling
shift register that is internal to the device. The user can utilize the Transmit Multiframe bit in Status
Register 2 (SR2.5) to know when to update the signaling bits. The bit will be set every 2 ms and the user
has 2 ms to update the TSRs before the old data will be retransmitted.
The TS1 register is special because it contains the CAS multiframe alignment word in its upper nibble.
The upper nibble must always be set to 0000 or else the terminal at the far end will lose multiframe
synchronization. If the user wishes to transmit a multiframe alarm to the far end, then the TS1.2 bit
should be set to a 1. If no alarm is to be transmitted, then the TS1.2 bit should be cleared. The three
remaining bits in TS1 are the spare bits. If they are not used, they should be set to 1. In CCS signaling
mode, TS1 to TS16 can also be used to insert signaling information. Via the SR2.5 bit, the user will be
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
0
SYMBOL
D(30)
A(1)
X
Y
B(10)
B(11)
B(12)
B(13)
B(14)
B(15)
B(1)
B(2)
B(3)
B(4)
B(5)
B(6)
B(7)
B(8)
B(9)
0
POSITION
TS1.0/1/3
TS16.0
TS1.2
TS2.7
C(10)
C(11)
C(12)
C(13)
C(14)
C(15)
C(1)
C(2)
C(3)
C(4)
C(5)
C(6)
C(7)
C(8)
C(9)
0
NAME AND DESCRIPTION
Spare Bits.
Remote Alarm Bit.
Signaling Bit A for Channel 1.
Signaling Bit D for Channel 30.
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)
D(9)
0
37 of 60
A(16)
A(17)
A(18)
A(19)
A(20)
A(21)
A(22)
A(23)
A(24)
A(25)
A(26)
A(27)
A(28)
A(29)
A(30)
X
B(16)
B(17)
B(18)
B(19)
B(20)
B(21)
B(22)
B(23)
B(24)
B(25)
B(26)
B(27)
B(28)
B(29)
B(30)
Y
C(16)
C(17)
C(18)
C(19)
C(20)
C(21)
C(22)
C(23)
C(24)
C(25)
C(26)
C(27)
C(28)
C(29)
C(30)
X
D(16)
D(17)
D(18)
D(19)
D(20)
D(21)
D(22)
D(23)
D(24)
D(25)
D(26)
D(27)
D(28)
D(29)
D(30)
(LSB)
X
TS11 (4A)
TS14 (4D)
TS12 (4B)
TS13 (4C)
TS15 (4E)
TS10 (49)
TS16 (4F)
TS1 (40)
TS2 (41)
TS3 (42)
TS4 (43)
TS5 (44)
TS6 (45)
TS7 (46)
TS8 (47)
TS9 (48)
DS21Q43A