Texas Instruments TMS320C6670, Data Manual

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34 Device Overview Copyright 2012 Texas Instruments Incorporated
SPRS689D—March 2012
Multicore Fixed and Floating-Point System-on-Chip
TMS320C6670
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2.4.2.5.2 I
2
C Passive Mode
In passive mode, the device does not drive the clock, but simply acks data received on the specified address.
2.4.2.6 SPI Boot Device Configuration
In SPI boot mode, the SPI device configuration uses ten bits of device configuration instead of seven as used in other
boot modes.
Figure 2-8 I
2
C Passive Mode Device Configuration Fields
9 8 7 6 5 4 3
Reserved Mode
Receive I
2
C Address
Reserved
Table 2-10 I
2
C Passive Mode Device Configuration Field Descriptions
Bit Field Description
9 Reserved Reserved
8 Mode I
2
C operation mode
0 = Master mode (see ‘‘I2C Master Mode’’ on page 33)
1 = Passive mode
8-5 Receive I
2
C Address I
2
C bus address configuration
0 - 7 = The I
2
C bus address the device will listen to for data
The actual value on the bus is 0x19 plus the value in bits [8:5]. For Ex. if bits[8:5] = 0 then the device will listen to I
2
C
bus address 0x19.
4-3 Reserved Reserved
End of Table 2-10
Figure 2-9 SPI Device Configuration Fields
12 11 10 9 8 7 6 5 4 3
Mode 4, 5 Pin Addr Width Chip Select Parameter Table Index
Table 2-11 SPI Device Configuration Field Descriptions
Bit Field Description
12-11 Mode Clk Pol / Phase
0 = Data is output on the rising edge of SPICLK. Input data is latched on the falling edge.
1 = Data is output one half-cycle before the first rising edge of SPICLK and on subsequent falling edges. Input
data is latched on the rising edge of SPICLK.
2 = Data is output on the falling edge of SPICLK. Input data is latched on the rising edge.
3 = Data is output one half-cycle before the first falling edge of SPICLK and on subsequent rising edges. Input
data is latched on the falling edge of SPICLK.
10 4, 5 Pin SPI operation mode configuration
0 = 4-pin mode used
1 = 5-pin mode used
9 Addr Width SPI address width configuration
0 = 16-bit address values are used
1 = 24-bit address values are used
8-7 Chip Select The chip select field value
6-3 Parameter Table Index Specifies which parameter table is loaded
End of Table 2-11