Multicore Fixed and Floating-Point System-on-Chip
Copyright 2012 Texas Instruments Incorporated
Device Overview
31
SPRS689D—March 2012
TMS320C6670
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
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.
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.
Figure 2-3
No Boot Configuration Fields
9
8
7
6
5
4
3
Sub-Mode
Reserved
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
Figure 2-4
Serial Rapid I/O Device Configuration Fields
9
8
7
6
5
4
3
Lane Setup
Data Rate
Ref Clock
Reserved
Table 2-5
Serial Rapid I/O Configuration Field Descriptions
Bit
Field
Description
9
Lane Setup
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)
8-7
Data Rate
SRIO data rate configuration
0 = 1.25 GBs
1 = 2.5 GBs
2 = 3.125 GBs
3 = 5.0 GBs
6-5
Ref Clock
SRIO reference clock configuration
0 = Reference clock = 156.25 MHz
1 = Reference clock = 250 MHz
2 = Reference clock = 312.5 MHz
3 = Reserved
4-3
Reserved
Reserved
End of Table 2-5
Содержание TMS320C6670
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