=鈥淗ardware鈥?/div>
mode requires no host
processor; intended for stand-alone app-
lications
Selectable 0, 2, 4, 16 state robbed bit
signaling modes
Allows mix of 鈥渃lear鈥?and 鈥渘on-clear鈥?DS0
channels on same DS1 link
Alarm generation and detection
Receive error detection and counting for
transmission performance monitoring
5V supply, low-power CMOS technology
Surface-mount package available, designated
DS2180AQ
Industrial temperature range of -40擄C to
+85擄C available, designated DS2180AN or
DS2180AQN
Compatible to DS2186 Transmit Line
Interface, DS2187 Receive Line Interface,
DS2188 Jitter Attenuator, DS2175 T1/CEPT
Elastic Store, DS2290 T1 Isolation Stik, and
DS2291 T1 Long Loop Stik
PIN ASSIGNMENT
TMSYNC
TFSYNC
TCLK
TCHCLK
TSER
TMO
TSIGSEL
TSIGFR
TABCD
TLINK
TLCLK
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
RSIGSEL
RSIGFR
RABCD
RMSYNC
RFSYNC
RSER
RCHCLK
RCLK
RLCLK
RLINK
RYEL
40-Pin DIP (600-mil)
NC
TCHCLK
TCLK
NC
TFSYNC
TMSYNC
VDD
RLOS
RFER
RBV
RCL
TSER
TMO
TSIGSEL
TSIGFR
TABCD
TLINK
TLCLK
TPOS
TNEG
INT
SDI
5
4
3
2
1
44
43
42
41
1 of 35
SDO
CS
SCLK
SPS
VSS
RYEL
RLINK
NC
RLCLK
RCLK
NC
19
20
21
22
23
24
25
26
27
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
RNEG
RPOS
RST
TEST
RSIGSEL
RSIGFR
RABCD
RMSYNC
RFSYNC
RSER
RCHCLK
112099