DS2181A
CEPT Primary Rate Transceiver
www.dalsemi.com
FEATURES
Single chip primary rate transceiver meets
CCITT standards G.704, G.706 and G.732
Supports new CRC4-based framing
standards and CAS and CCS signaling
standards
Simple serial interface used for device
configuration and control in processor mode
Hardware mode requires no host processor;
intended for stand-alone applications
Comprehensive, on-chip alarm generation,
alarm detection, and error logging logic
Shares footprint with DS2180A T1
Transceiver
Comparison to DS2175 T1/CEPT Elastic
Store, DS2186 Transmit Line Interface,
DS2187 Receive Line Interface, and DS2188
Jitter Attenuator
5V supply; low-power CMOS technology
PIN ASSIGNMENT
TMSYNC
TFSYNC
TCLK
TCHCLK
TSER
TMO
TXD
TSTS
TSD
TIND
TAF
TPOS
TNEG
INT
SDI
SDO
CS
SCLK
SPS
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VDD
RLOS
RFER
RBV
RCL
RNEG
RPOS
RST
TEST
RCSYNC
RSTS
RSD
RMSYNC
RFSYNC
RSER
RCHCLK
RCLK
RAF
RDMA
RRA
40-Pin DIP (600-mil)
RFSA
TCHCLK
TCLK
RMSA
TFSYNC
TMSYNC
VDD
RLOS
RFER
RBV
RCL
TSER
TMO
TXD
TSTS
TSD
TIND
TAF
TPOS
TNEG
INT
SDI
5
4
3
2
1
44
43
42
41
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SDO
CS
SCLK
SPS
VSS
RRA
RDMA
RCTO
RAF
RCLK
RCSA
19
20
21
22
23
24
25
26
27
7
8
9
10
11
12
13
14
15
16
17
44-PIN PLCC
39
38
37
36
35
34
33
32
31
30
29
RNEG
RPOS
RST
TEST
RCSYNC
RSTS
RSD
RMSYNC
RFSYNC
RSER
RCHCLK
112099