L64777 LSI Logic Corporation, L64777 Datasheet - Page 88

• Manufacturer Part Number: L64777
• Description: DVB Qam Modulator
• Manufacturer: LSI Logic Corporation

5.8 Serial Microprocessor Interface Signals
5-8
QAM_IN
QAM_Q
QAM_QN
VDDX_I
VDDX_Q
VREF_I
VREF_Q
INT_n
Signals
Symbol I Modulation Inverted
QAM_IN is the corresponding inverted differential part to
QAM_I.
Symbol Q Modulation
QAM_Q is the positive differential analog quadrature
output signal of the modulator.
Inverted Differential of QAM_Q
QAM_QN is the corresponding inverted differential part to
QAM_Q.
Isolated Power: Digital-to-Analog Converter,
I Channel
For usage and value, see the LSI Logic datasheet
G10
to-Analog Converter (September 1998).
Isolated Power: Digital-to-Analalog Converter,
Q Channel
For usage and value, see the LSI Logic datasheet
G10
to-Analog Converter (September 1998).
Reference Voltage Input: I
For usage and value, see the LSI Logic datasheet
G10
to-Analog Converter (September 1998).
Reference Voltage Input: Q
For usage and value, see the LSI Logic datasheet
G10
to-Analog Converter (September 1998).
Interrupt Request
The L64777 asserts INT_n LOW when the interrupt is
enabled and an interrupt condition occurs. INT_n is an
open drain output that requires an external pull-up
resistor for operation.
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-p CW900100 10-bit Direct Digital Synthesis Digital-
-p CW900100 10-bit Direct Digital Synthesis Digital-
-p CW900100 10-bit Direct Digital Synthesis Digital-
-p CW900100 10-bit Direct Digital Synthesis Digital-
Analog Output
Analog Output
Analog Output
Analog Input
Analog Input
Output