DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 80

no-image

DS21455

Manufacturer Part Number
DS21455
Description
Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of DS21455

Product
Framer
Number Of Transceivers
4
Data Rate
64 Kbps
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
328 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Package / Case
BGA

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS21455
Manufacturer:
DS
Quantity:
29
Part Number:
DS21455
Manufacturer:
MIRA
Quantity:
83
Part Number:
DS21455
Manufacturer:
Maxim Integrated
Quantity:
10 000
Part Number:
DS21455
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
DS21455+
Manufacturer:
Maxim Integrated Products
Quantity:
135
Part Number:
DS21455+
Manufacturer:
Maxim Integrated
Quantity:
10 000
Part Number:
DS21455N
Manufacturer:
Maxim Integrated
Quantity:
10 000
Part Number:
DS21455N+
Manufacturer:
Maxim Integrated Products
Quantity:
135
Part Number:
DS21455N+
Manufacturer:
Maxim Integrated
Quantity:
10 000
14. LOOPBACK CONFIGURATIONS
The DS21455/DS21458 have four loopback configurations including Framer, Payload, Local, and
Remote loopback.
Payload loopback may be done on a per-channel basis if both the transmit and receive paths are
synchronous (RCLK = TCLK and RSYNC = TSYNC). See Section 14.1.
Figure 14-1. Normal Signal Flow Diagram
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Framer Loopback (FLB).
0 = loopback disabled
1 = loopback enabled
LTS
RECEIVE
TRANSMIT
7
0
RECEIVE
TRANSMIT
LIU
LIU
LIU
LIU
Figure 14-1
LBCR
Loopback Control Register
4Ah
6
0
ATTENUATOR
ATTENUATOR
depicts a normal signal flow without any loopbacks enabled
ATTENUATOR
ATTENUATOR
5
0
JITTER
JITTER
JITTER
JITTER
FRAMER LOOPBACK
LIUC
NORMAL MODE
4
0
80 of 270
LLB
3
0
RECEIVE
FRAMER
TRANSMIT
RECEIVE
FRAMER
FRAMER
TRANSMIT
FRAMER
RLB
2
0
PLB
1
0
BACKPLANE
BACKPLANE
BACKPLANE
BACKPLANE
I/F
I/F
I/F
I/F
FLB
0
0
.

Related parts for DS21455