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| 型號(hào)： | TLV320AIC26IRHBG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁(yè)數(shù)： | 27/67頁(yè) |
| 文件大小： | 883K |
| 代理商： | TLV320AIC26IRHBG4 |
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TLV320AIC26
SLAS412 DECEMBER 2003
www.ti.com
33
’AIC26 COMMUNICATION PROTOCOL
Register Programming
The ’AIC26 is entirely controlled by registers. An SPI master controlls the reading and writing of these registers by the use
of a 16-bit command, which is sent prior to the data for that register. The command is constructed as shown in Figure 29.
The command word begins with a R/W bit, which specifies the direction of data flow on the SPI serial bus. The following
four bits specify the page of memory this command is directed to, as shown in Table 5. The next six bits specify the register
address on that page of memory to which the data is directed. The last five bits are reserved for future use and should be
written only with zeros.
Table 5. Page Addressing
PG3
PG2
PG1
PG0
PAGE ADDRESSED
0
1
0
1
0
2
0
1
Reserved
0
1
0
Reserved
0
1
0
1
Reserved
0
1
0
Reserved
0
1
Reserved
1
0
Reserved
1
0
1
Reserved
1
0
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
Reserved
To read all the first page of memory, for example, the host processor must send the command 0x8000 to the ’AIC26 – this
specifies a read operation beginning at page 0, address 0. The processor can then start clocking data out of the ’AIC26.
The ’AIC26 automatically increments its address pointer to the end of the page; if the host processor continues clocking
data out past the end of a page, the ’AIC26 sends back the value 0xFFFF.
Likewise, writing to page 1 of memory consists of the processor writing the command 0x0800, which specifies a write
operation, with PG0 set to 1, and all the ADDR bits set to 0. This results in the address pointer pointing at the first location
in memory on Page 1. See the section on the ’AIC26 memory map for details of register locations
BIT 15
MSB
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LSB
R/W*
PG3
PG2
PG1
PG0
ADDR5
ADDR4
ADDR3
ADDR2
ADDR1
ADDR0
0
Figure 29. ’AIC26 Command Word
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