DS21Q55N Maxim Integrated Products, DS21Q55N Datasheet - Page 3

• Manufacturer Part Number: DS21Q55N
• Description: Framer E1/J1/T1 3.3V 256-Pin BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55N

• Package: 256BGA
• Number Of Transceivers: 4
• Standard Framing Format: E1|J1|T1
• Maximum Supply Current: 75(Typ) mA
• Minimum Single Supply Voltage: 3.135 V
• Maximum Single Supply Voltage: 3.465 V

13.
14.
15.
16.
17.
18.
19.
20.
21.
12.2
12.3
12.4
14.1
14.2
15.1
17.1
17.2
17.3
17.4
19.1
19.2
20.1
20.2
20.3
21.1
21.2
12.1.1 T1 Operation ..............................................................................................80
12.1.2 E1 Operation..............................................................................................80
12.2.1 T1 Operation ..............................................................................................82
12.2.2 E1 Operation..............................................................................................82
12.3.1 T1 Operation ..............................................................................................83
12.3.2 E1 Operation..............................................................................................83
14.1.1 Processor-Based Signaling ........................................................................87
14.1.2 Hardware-Based Receive Signaling ...........................................................88
14.2.1 Processor-Based Mode..............................................................................93
14.2.2 Software Signaling Insertion-Enable Registers, E1 CAS Mode ..................97
14.2.3 Software Signaling Insertion-Enable Registers, T1 Mode...........................99
14.2.4 Hardware-Based Mode ..............................................................................99
17.1.1 T1 Mode...................................................................................................111
17.1.2 E1 Mode...................................................................................................111
17.2.1 T1 Mode...................................................................................................112
17.2.2 E1 Mode...................................................................................................112
19.1.1 Example: Transmit a BOC........................................................................114
19.2.1 Example: Receive a BOC.........................................................................114
21.2.1 FIFO Control ............................................................................................134
DS0 MONITORING FUNCTION ..................................................................................................85
SIGNALING OPERATION...........................................................................................................87
PER-CHANNEL IDLE CODE GENERATION ............................................................................100
CHANNEL BLOCKING REGISTERS ........................................................................................105
ELASTIC STORES OPERATION..............................................................................................108
G.706 INTERMEDIATE CRC-4 UPDATING (E1 MODE ONLY) ................................................113
T1 BIT-ORIENTED CODE (BOC) CONTROLLER ....................................................................114
ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION (E1 ONLY) .........................117
HDLC CONTROLLERS.............................................................................................................130
P
F
E-B
R
T
I
R
T
E
M
T
R
M
M
M
B
HDLC C
DLE
RAMES
RANSMIT
RANSMIT
RANSMIT
ATH
LASTIC
ASIC
ECEIVE
ECEIVE
ECEIVE
INIMUM
ETHOD
ETHOD
ETHOD
IT
-C
C
C
O
ODE
ODE
OUNTER
PERATION
ONFIGURATION
O
S
1: H
2: I
3: I
S
S
BOC ...............................................................................................114
D
TORES
UT
S
S
BOC .............................................................................................114
IGNALING
IDE
ELAY
P
IGNALING
IDE
V
NTERNAL
NTERNAL
-
ROGRAMMING
ARDWARE
IOLATION
OF
...............................................................................................111
.............................................................................................111
(EBCR)..................................................................................84
-S
M
I
NITIALIZATION
ODE
D
YNC
ETAILS
........................................................................................87
......................................................................................93
R
R
..................................................................................112
C
C
EGISTER
EGISTER
S
.................................................................................130
OUNT
OUNT
CHEME
E
............................................................................130
XAMPLES
R
R
.....................................................................112
....................................................................117
S
S
EGISTER
EGISTER
CHEME
CHEME
...........................................................101
3 of 237
B
B
(PCVCR) .........................................82
(FOSCR).........................................83
ASED ON
ASED ON
D
CRC4 M
OUBLE
-F
ULTIFRAME
RAME
..............117
........120