DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
PIN
78
NAME
RLINK
RLOS/LOTC
RMSYNC
RNEGI
RNEGO
RPOSI
TYPE
O
O
O
I
FUNCTION
Receive Link Data
99
Receive Loss of Sync/Loss of Transmit Clock
Receive Multiframe Sync
Receive Negative Data Input
Receive Negative Data Output
Receive Positive Data Input
Receive Positive Data Output
Receive Analog Ring Input
Receive Serial Data
96
87
90
O
I
86
91
RPOSO
RRING
RSER
O
I
17
95
O
O
O
I/O
I
94
RSIG
RSIGF
RSYNC
RSYSCLK
RTIP
RVDD
RVSS
TCHBLK
TCHCLK
TCLK
Receive Signaling Output
Receive Signaling Freeze Output
Receive Sync
93
98
100
16
Receive System Clock
I
Receive Analog Tip Input
Receive Analog Positive Supply
Receive Analog Signal Ground
Transmit Channel Block
Transmit Channel Clock
Transmit Clock
18
—
—
O
O
I
19, 20, 24
33
53
46
40
TCLKI
TCLKO
TDATA
TESO
I
Transmit Clock Input
41
O
I
Transmit Clock Output
50
Transmit Data
49
O
I
Transmit Elastic Store Output
Test
14
TEST
34
TLCLK
TLINK
TNEGI
TNEGO
TPOSI
O
I
Transmit Link Clock
35
Transmit Link Data
39
I
Transmit Negative Data Input
Transmit Negative Data Output
Transmit Positive Data Input
Transmit Positive Data Output
Transmit Analog Ring Output
Transmit Serial Data
42
O
I
38
43
TPOSO
TRING
TSER
O
O
I
32
47
48
TSIG
I
I
Transmit Signaling Input
Transmit System Sync
Transmit Sync
Transmit System Clock
Transmit Analog Tip Output
Transmit Analog Positive Supply
Transmit Analog Signal Ground
Write Input (Read/Write), Active Low
Quartz Crystal Driver
52
TSSYNC
TSYNC
TSYSCLK
TTIP
37
I/O
I
51
29
O
—
—
I
31
TVDD
TVSS
WR (R/W)
XTALD
30
77
22
O
13 of 124
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
