Device Configuration Field; Table 2-4 No Boot Configuration Field Descriptions; Table 2-5 Serial Rapid I/O Configuration Field Descriptions - Texas Instruments TMS320C6670 Data Manual

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2.4.2 Device Configuration Field

The device configuration fields BOOTMODE[9:3] are used to configure the boot peripheral and, therefore, the bit
definitions depend on the boot mode.
2.4.2.1 No Boot Device Configuration
Figure 2-3 No Boot Configuration Fields
9
Sub-Mode
Table 2-4 No Boot Configuration Field Descriptions
Bit Field Description
9-8 Sub-Mode Sub mode select
0 = No boot
1 - 3 = Reserved
7-3 Reserved Reserved
End of Table 2-4
2.4.2.2 Serial Rapid I/O Boot Device Configuration
The device ID is always set to 0xff (8-bit node IDs) or 0xffff (16 bit node IDs) at power-on reset.
Figure 2-4 Serial Rapid I/O Device Configuration Fields
9
Lane Setup
Table 2-5 Serial Rapid I/O Configuration Field Descriptions
Bit Field
9 Lane Setup
8-7 Data Rate
6-5 Ref Clock
4-3 Reserved
End of Table 2-5
In SRIO boot mode, both the message mode and DirectIO mode will be enabled by default. If use of the memory
reserved for received messages is required and reception of messages cannot be prevented, the master can disable
the message mode by writing to the boot table and generating a boot restart.
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8 7
8 7
Data Rate
Description
SRIO port and lane configuration
0 = Port configured as 4 ports each 1 lane wide (4 -1× ports)
1 = Port configured as 2 ports 2 lanes wide (2 – 2× ports)
SRIO data rate configuration
0 = 1.25 GBs
1 = 2.5 GBs
2 = 3.125 GBs
3 = 5.0 GBs
SRIO reference clock configuration
0 = Reference clock = 156.25 MHz
1 = Reference clock = 250 MHz
2 = Reference clock = 312.5 MHz
3 = Reserved
Reserved
Multicore Fixed and Floating-Point System-on-Chip
6 5
Reserved
6 5
Ref Clock
TMS320C6670
SPRS689D—March 2012
4 3
4 3
Reserved
Device Overview 31