DS21Q58 E1 Quad Transceiver
2 of 74
TABLE OF CONTENTS
1.
2.
3.
4.
ACRONYMS.......................................................................................................................6
DETAILED DESCRIPTION.................................................................................................6
BLOCK DIAGRAM.............................................................................................................7
PIN DESCRIPTION.............................................................................................................8
P
IN
F
UNCTION
D
ESCRIPTIONS
......................................................................................................12
FUNCTIONAL DESCRIPTION .........................................................................................13
HOST INTERFACE PORT................................................................................................14
P
ARALLEL
P
ORT
O
PERATION
.......................................................................................................14
S
ERIAL
P
ORT
O
PERATION
............................................................................................................14
REGISTER MAP...............................................................................................................16
CONTROL, ID, AND TEST REGISTERS.........................................................................17
P
OWER
-U
P
S
EQUENCE
................................................................................................................18
F
RAMER
L
OOPBACK
....................................................................................................................21
A
UTOMATIC
A
LARM
G
ENERATION
.................................................................................................22
R
EMOTE
L
OOPBACK
....................................................................................................................22
L
OCAL
L
OOPBACK
.......................................................................................................................23
STATUS AND INFORMATION REGISTERS...................................................................27
I
NTERRUPT
H
ANDLING
.................................................................................................................28
CRC4 S
YNC
C
OUNTER
................................................................................................................29
10.
ERROR COUNT REGISTERS..........................................................................................34
10.1
BPV
OR
CV C
OUNTER
.............................................................................................................34
10.2
CRC4 E
RROR
C
OUNTER
..........................................................................................................34
10.3
E-B
IT
/PRBS B
IT
-E
RROR
C
OUNTER
..........................................................................................35
10.4
FAS E
RROR
C
OUNTER
.............................................................................................................35
11.
SIGNALING OPERATION................................................................................................36
11.1
R
ECEIVE
S
IGNALING
.................................................................................................................36
11.2
T
RANSMIT
S
IGNALING
...............................................................................................................36
11.3
CAS O
PERATION
.....................................................................................................................36
12.
DS0 MONITORING FUNCTION .......................................................................................37
13.
PRBS GENERATION AND DETECTION.........................................................................39
14.
SYSTEM CLOCK INTERFACE........................................................................................40
15.
TRANSMIT CLOCK SOURCE..........................................................................................41
16.
IDLE CODE INSERTION..................................................................................................41
17.
PER-CHANNEL LOOPBACK ..........................................................................................42
18.
ELASTIC STORE OPERATION.......................................................................................42
19.
ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION..................................43
20.
USER-CONFIGURABLE OUTPUTS................................................................................45
4.1
5.
6.
6.1
6.2
7.
8.
8.1
8.2
8.3
8.4
8.5
9.
9.1
9.2