Multicore Fixed and Floating-Point System-on-Chip
Copyright 2012 Texas Instruments Incorporated
Device Overview
33
SPRS689D—March 2012
TMS320C6670
2.4.2.5 I
2
C Boot Device Configuration
2.4.2.5.1 I
2
C Master Mode
In master mode, the I
2
C device configuration uses ten bits of device configuration instead of seven as used in other
boot modes. In this mode, the device will make the initial read of the I
2
C EEPROM while the PLL is in bypass mode.
The initial read will contain the desired clock multiplier, which will be set up prior to any subsequent reads.
Table 2-8
BAR Config / PCIe Window Sizes
BAR cfg
BAR0
32-Bit Address Translation
64-Bit Address Translation
BAR1
BAR2
BAR3
BAR4
BAR5
BAR2/3
BAR4/5
0b0000
PCIe MMRs
32
32
32
32
Clone of BAR4
0b0001
16
16
32
64
0b0010
16
32
32
64
0b0011
32
32
32
64
0b0100
16
16
64
64
0b0101
16
32
64
64
0b0110
32
32
64
64
0b0111
32
32
64
128
0b1000
64
64
128
256
0b1001
4
128
128
128
0b1010
4
128
128
256
0b1011
4
128
256
256
0b1100
256
256
0b1101
512
512
0b1110
1024
1024
0b1111
2048
2048
Figure 2-7
I
2
C Master Mode Device Configuration Fields
12
11
10
9
8
7
6
5
4
3
Reserved
Speed
Address
Reserved
Mode Parameter
Index
Table 2-9
I
2
C Master Mode Device Configuration Field Descriptions
Bit
Field
Description
12
Reserved
Reserved
11
Speed
I
2
C data rate configuration
0 = I
2
C data rate set to approximately 20 kHz
1 = I
2
C fast mode. Data rate set to approximately 400 kHz (will not exceed)
10
Address
I
2
C bus address configuration
0 = Boot from I
2
C EEPROM at I
2
C bus address 0x50
1 = Boot from I
2
C EEPROM at I
2
C bus address 0x51
9
Reserved
Reserved
8
Mode
I
2
C operation mode
0 = Master mode
1 = Passive mode (see 2.4.2.5.2
7-3
Parameter Index
Identifies the index of the configuration table initially read from the I
2
C EEPROM.
This value can range from 0 to 32.
End of Table 2-9
Содержание TMS320C6670
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