参数资料
型号: L64781
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: PLASTIC, QFP-100
文件页数: 127/164页
文件大小: 2003K
代理商: L64781
Microprocessor Serial Interface
4-3
4.2 Microprocessor Serial Interface
The following signals are related to the microprocessor serial interface.
INTn
Internal, Unmasked Interrupt
Output Open Drain
The DTTV receiver asserts this signal when an internal,
unmasked interrupt ag is set. The signal remains
asserted as long as the interrupt condition persists and
the interrupt ag is not masked.
SAD[1:0]
Serial Bus Address
I
Programmable serial bus address slave of the L64781.
SCL
Serial Clock
Input Pull-up
SDA
Serial Data
Bidirect Output Open Drain
4.3 Control Signal Interface
The following signals are related to the control signal interface.
CLK18
18-MHz Input Clock
I
This pin represents the 18-MHz input clock and comes
from the external VCXO.
CLKOUT
Output Clock
O 3-state
This is the output clock signal for the external ADC when
the conguration register ADCON = 0. When the on-chip
ADC is used (ADCON = 1), this output signal is in
3-state.
DIGIN[9:0]
Digital Input
I
In normal mode, when the 10-bit ADC off-chip is used,
the DIGIN[0] represents the LSB while DIGIN[9]
represents the MSB. This bus is synchronized with the
CLKOUT clock by the off-chip ADC. In ADC on-chip
mode, this bus should be connected to ground.
RESET
Hard Reset
I
This pin is active HIGH.
l64781.book Page 3 Friday, January 19, 2001 1:28 PM
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