Owner manual

BPV COUNTER
SYNCHRONIZER
ALARM DETECTION
LOOP CODE DETECTOR
CRC/FRAME ERROR COUNT
ONE’S DENSITY MONITOR
SIGNALING EXTRACTION
PAYLOAD LOOPBACK
ELASTIC
STORE
RECEIVE SIDE
FRAMER
RLOS
RLINK RLCLK RCHBLK RCHCLK RSER SYSCLK RSYNC
B8ZS DECODER
CHANNEL MARKING
B8ZS ENCODE
YELLOW ALARM GEN.
FDL INSERTION
CRC GEN.
F–BIT INSERTION
ONE’S DENSITY ENCODER
LOOP CODE GEN.
AIS GEN.
CLEAR CHANNEL
SIGNALING INSERTION
IDLE CODE INSERTION
TRANSMIT SIDE FORMATTER
ELASTIC
STORE
TSER RCLK
MUX
LOSS OF TCLK
DETECT
TIMING
CONTROL
TSYNC TCHCLK TCHBLK
FRAMER LOOPBACK
REMOTE LOOKPACK
JITTER ATTENUATION MUX
(CAN BE PLACED IN EITHER THE TRANSMIT
OR RECEIVE PATHS)
LOCAL LOOPBACK
CLOCK/
DATA
RECOVERY
WAVE
SHAPING
PEAK
CSU
FILTERS
DETECT
FILTER
LINE
DRIVERS
XTAL/VCO/PLL
PARALLEL CONTROL PORT
(ROUTED TO ALL BLOCKS)
TRING
TTIP
RTIP
RRING
ACLKI XTAL1 XTAL2
24.7 MHz
BTS CS WR(R/W) RD(DS) ALE(AS) AD0–AD7 INT1/INT2
TCLK
TIMING
CONTROL
FDL
EXTRACTION
FDL
INSERT
LOGIC
TLINK TLCLK
DS2151Q
022697 3/46
DS2151Q BLOCK DIAGRAM Figure 1–1