DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 14

• Manufacturer Part Number: DS21Q55
• Description: IC TXRX QUAD T1/E1/J1 SCT 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55

• Function: Transceiver
• Interface: E1, J1, T1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Includes: BERT Generator and Detector, Dual HDLC Controllers
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

1.2 Block Diagram
Figure 1-1
are shown in subsequent figures. The block diagram is divided into three functional blocks: LIU,
FRAMER, and BACKPLANE INTERFACE.
Figure 1-1. Block Diagram
RRING
TRING
shows a simplified block diagram featuring the major components of the DS21Q55. Details
RTIP
TTIP
Common
MCLK
VCO / PLL
MUX
MUX
JTAG Port
14 of 237
LOTC
MUX
Transmit Side
Receive Side
Formatter
DS21Q55
Framer
CLOCK
CLOCK
SYNC
DATA
SYNC
DATA
Parallel Control Port (routed to all blocks)
HDLC/BOC
Controller
HDLC/BOC
Controller
Signaling Buffer
Timing Control
Signaling Buffer
Sync Control
8.192MHz Clock
Timing
Control
Elastic
Synthesizer
Store
Elastic
Store
ESIB
TRANSCEIVER #2
TRANSCEIVER #3
TRANSCEIVER #4
TLINK
TLCLK
TCLK
RCLK
TSSYNC
RLOS/LOTC
BPCLK
RCHBLK
RSYSCLK
RMSYNC
RSIG
RSIGF
RFSYNC
TSYSCLK
TSER
TCHBLK
TCHCLK
TSIG
RLINK
RLCLK
RCHCLK
RSER
RSYNC
TSYNC
ESIBRD
ESIBS0
ESIBS1