DS2154
2 PIN DESCRIPTION
PIN
NAME
TYPE
FUNCTION
1
RCHBLK
O
Receive Channel Block
2, 4, 5,
7–10, 15, 23,
N.C.
—
No Connection. These pins should be left open circuited.
26, 27, 28,
36, 54, 76
3
8MCLK
RCL
O
O
I
8.192MHz Clock
6
Receive Carrier Loss
11
BTS
Bus Type Select
12
LIUC
I
Line Interface Connect
Eight Times Clock
13
8XCLK
TEST
O
I
14
Test
16
RTIP
I
I
Receive Analog Tip Input
Receive Analog Ring Input
Receive Analog Positive Supply
Receive Analog Signal Ground
Master Clock Input
17
RRING
RVDD
RVSS
18
—
—
I
19, 20, 24
21
MCLK
XTALD
INT
22
O
O
O
—
—
O
O
O
I
Quartz Crystal Driver
Active-Low Interrupt
25
29
TTIP
TVSS
Transmit Analog Tip Output
Transmit Analog Signal Ground
Transmit Analog Positive Supply
Transmit Analog Ring Output
Transmit Channel Block
Transmit Link Clock
30
31
TVDD
TRING
TCHBLK
TLCLK
TLINK
TSYNC
TPOSI
TNEGI
TCLKI
TCLKO
TNEGO
TPOSO
32
33
34
35
Transmit Link Data
Transmit Sync
37
I/O
I
38
Transmit Positive Data Input
Transmit Negative Data Input
Transmit Clock Input
39
I
I
40
41
O
O
O
Transmit Clock Output
Transmit Negative Data Output
Transmit Positive Data Output
42
43
44, 61, 81,
DVDD
—
Digital Positive Supply
83
45, 60, 80,
DVSS
—
Digital Signal Ground
84
46
47
48
49
50
51
52
53
55
56
TCLK
TSER
I
I
Transmit Clock
Transmit Serial Data
TSIG
I
Transmit Signaling Input
Transmit Elastic Store Output
Transmit Data
TESO
O
I
TDATA
TSYSCLK
TSSYNC
TCHCLK
MUX
I
I
Transmit System Clock
Transmit System Sync
Transmit Channel Clock
Bus Operation
O
I
D0/AD0
I/O
Data Bus Bit 0/Address/Data Bus Bit 0
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ROCHESTER [ Rochester Electronics ]
