STEL-1209/CE Intel, STEL-1209/CE Datasheet - Page 20

• Manufacturer Part Number: STEL-1209/CE
• Description: BPSK/QPSK/16 QAM Burst Modulator Assembly
• Manufacturer: Intel

Master Mode, 16QAM
BURST TIMING SIGNAL RELATIONSHIPS
Slave Mode (16QAM Shown)
BURST TIMING SIGNAL RELATIONSHIPS
STEL-1209
DATAENO
SCRMEN
DATAEN
RDSLEN
SYMPLS
TSDATA
DIFFEN
BITCLK
CLKEN
DATAENO
TCLK
SCRMEN
DATAEN
RDSLEN
SYMPLS
TSDATA
DIFFEN
BITCLK
CLKEN
TCLK
GUARD TIME
NOTE 1:
NOTE 2:
GUARD TIME
STEL receivers differentially decode relative to the last preamble symbol. To encode the
first symbol against a "zero" symbol reference instead, bring DIFFEN high at the
leading edge of the user data packet (dotted line).
If bit 6 of Configuration Register 36
delayed by eight cycles of BITCLK (dotted line). This is required if the Reed-Solomon
encoder is used.
PI 1 PQ 1 PI 0 PQ 0 PI 1 PQ 1 PI 0 PQ 0 UI 1 UQ 1 UI 0 UQ 0 UI 1 UQ 1 UI 0 UQ 0 GI 1 GQ 1 GI 0 GQ 0 GI 1 GQ 1 GI 0 GQ 0
PI 1 PQ 1 PI 0 PQ 0 PI 1 PQ 1 PI 0 PQ 0 UI 1 UQ 1 UI 0 UQ 0 UI 1 UQ 1 UI 0 UQ 0 GI 1 GQ 1 GI 0 GQ 0 GI 1 GQ 1 GI 0 GQ 0
PREAMBLE
PREAMBLE
NOTE 1
NOTE 1
20
H
NOTE 2
NOTE 2
is a "1" then the rising edge of DATAENO will be
USER DATA
USER DATA
GUARD TIME
GUARD TIME
WCP 52913.c-5/6/97
WCP 52914.c-5/7/97