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參數(shù)資料
| 型號(hào)： | TSC2111IRGZTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC48 |
| 封裝： | PLASTIC, QFN-48 |
| 文件頁數(shù)： | 43/99頁 |
| 文件大?。?/td> | 1143K |
| 代理商： | TSC2111IRGZTG4 |
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TSC2111
SLAS495A JUNE 2006 REVISED OCTOBER 2007
www.ti.com
48
A transmission begins when initiated by a master SPI. The byte from the master SPI begins shifting in on the
slave MOSI pin under the control of the master serial clock. As the byte shifts in on the MOSI pin, a byte shifts
out on the MISO pin to the master shift register.
The idle state of the serial clock for the TSC2111 is low, which corresponds to a clock polarity setting of 0 (typical
microprocessor SPI control bit CPOL = 0). The TSC2111 interface is designed so that with a clock phase bit
setting of 1 (typical microprocessor SPI control bit CPHA = 1), the master begins driving its MOSI pin and the
slave begins driving its MISO pin on the first serial clock edge. The SS pin can remain low between
transmissions; however, the TSC2111 only interprets command words which are transmitted after the falling
edge of SS.
TSC2111 COMMUNICATION PROTOCOL
Register Programming
The TSC2111 is entirely controlled by registers. Reading and writing these registers is controlled by an SPI
master and accomplished 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 36.
The command word begins with an R/W bit, which specifies the direction of data flow on the SPI serial bus. The
following 4 bits specify the page of memory this command is directed to, as shown in Table 7. 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 7. Page Addressing
PG3
PG2
PG1
PG0
PAGE ADDRESSED
0
1
0
1
0
2
0
1
3
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 TSC2111 the command
0x8000 – this specifies a read operation beginning at page 0, address 0. The processor can then start clocking
data out of the TSC2111. The TSC2111 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 TSC2111 sends back the value
0xFFFF.
Likewise, writing to page 1 of memory would consist 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 TSC2111 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
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