XRT91L31
3
REV. 1.0.2
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
FIGURE 2. 64 QFP PIN OUT OF THE XRT91L31 (TOP VIEW)
XRT91L30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
RE
SE
T
LO
O
P
TM_NO
J
A
CM
UF
RE
QSE
L
VDD_PE
C
L
TX
OP
TXO
N
L
O
SDDI
S
EX
T
R
XCLK
IP
EXTRXCL
KIN
VDD_PE
C
L
OOF
CD
RDI
S
RXI
P
RXIN
VD
D3.
3
RE
FC
LKP
AGND
FL_2
STS1_2
DJA_2/CS
MCLK_2
GND
RCLK_2
VDD
RNEG_2
RPOS_2
GND
DJA_0/SCLK
DS3/E3_0
STS1_0
FL0
AGND
AV
DD
GN
D
RR
C
L
K
_
1
RR
PO
S
_
1
RR
N
E
G
_
1
R
C
L
KES
NC
VD
D
S
3/E3_2
SD
O
FSS
RR
N
E
G
_
2
RR
PO
S
_
2
RR
C
L
K
_
2
GN
D
AV
DD
AGND
FL1
STS1_1
MCLK_1
GND
RCLK_1
RPOS_1
RNEG_1
VDD
RNEG_0
RPOS_0
RCLK_0
GND
MCLK_0
DJA_1/SDI
AGND
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
3332
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
XRT91L31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CDRAUXREFCLK
VDD3.3
FRAMEPULSE
RXPCLKO
GND
RXDO7
RXDO6
RXDO5
RXDO4
RXDO3
RXDO2
GND
RXDO1
RXDO0
VDD3.3
REFCLKN
PI
O_C
T
RL
VD
D3.
3
GND
AG
N
D
_R
X
AVDD
3.
3_RX
CA
P2P
CA
P2N
CA
P1N
CA
P1P
AVDD
3.
3_TX
AG
N
D
_TX
TT
L
R
EF
CLK
GND
VD
D3.
3
LOSE
XT
TXPCLK_IO
TXDI7
TXDI6
GND
TXDI5
TXDI4
TXDI3
TXDI2
TXDI1
TXDI0
STS12/STS3
CDRREFSEL
VDD3.3
DLOOP
RLOOPS
ALOOP
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
RES
E
T
LOOPTIME
CM
UF
RE
QS
E
L
V
D
D_
PE
CL
TXOP
TX
O
N
DLOS
DI
S
XR
X
C
L
K
IP
XRXC
LK
IN
V
D
D_
PE
CL
OO
F
CDR
DI
S
RX
IP
RX
IN
VDD
/CD
R
_
BW
REFCL
K
P
TABLE 1: ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING TEMPERATURE RANGE
XRT91L31IQ
64 Pin Lead QFP
-40°C to +85°C