參數(shù)資料
型號(hào): L64780
廠商: LSI Corporation
英文描述: DVB-T COFDM Demodulator(對地?cái)?shù)字視頻廣播 正交編碼頻率分割多路處理解調(diào)器)
中文描述: 的DVB - T COFDM解調(diào)器(對地?cái)?shù)字視頻廣播正交編碼頻率分割多路處理解調(diào)器)
文件頁數(shù): 52/126頁
文件大?。?/td> 953K
代理商: L64780
3-16
Interfaces
3.3.6 ADC Output
The ADC output lets you probe the internal ADC. The signals are the
digitized input samples (ADC) and the 18 MHz clock. These signals,
which are in two’s complement format, are mapped on the
MUXOUTBUS. See
Figure 3.28
.
3.4 Microprocessor Interface
The microprocessor interface operates in Serial Mode.
Important:
A Parallel mode interface is provided for test purposes. This
interface is used for LSI Logic internal testing and is not
intended for use in customer production receivers.
The Serial Bus mode interface is a serial interface operating in slave
mode. Its protocol is compatible with I
2
C specifications. For a more
detailed description of the Serial Bus, see
Appendix A
. The P_S input
signal selects either the serial or parallel mode.
Table 3.4
summarizes
the different modes.
When in Serial interface mode, D0 is used as a serial data signal, and
A0 is used as a serial clock signal. D[7:1] are used to set the serial bus
slave address. When using the serial bus, D[7:1] must be hardwired to
set the appropriate device slave address.
Figure 3.28 ADC Output Mapping
26
25
8
7
0
18 MHz CLK
0
ADC[7:0]
Table 3.4
Mode Selection Using the P_S Input Signal
P_S
Mode
Notes
Low
Parallel
LSI Internal use only
High
Serial
L64780 Serial Interface
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