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TMS320C6670 Peripheral Information and Electrical Specifications
Copyright 2012 Texas Instruments Incorporated
SPRS689D—March 2012
Multicore Fixed and Floating-Point System-on-Chip
TMS320C6670
There is a Central Processor Time Synchronization (CPTS) submodule in the Ethernet switch module that can be
used for time synchronization. Programming this register selects the clock source for the CPTS_RCLK. Please see
the see the
Gigabit Ethernet (GbE) Switch Subsystem for KeyStone Devices User Guide
in
Documentation from Texas Instruments’’ on page 66
for the register address and other details about the time
synchronization module. The register CPTS_RFTCLK_SEL for reference clock selection of time synchronization
submodule is shown in
.
Figure 7-49
RFTCLK Select Register (CPTS_RFTCLK_SEL)
31
3
2
0
Reserved
CPTS_RFTCLK_SEL
R - 0
RW - 0
Legend: R = Read only; -x, value is indeterminate
Table 7-76
RFTCLK Select Register Field Descriptions
Bit
Field
Description
31-3
Reserved
Reserved. Read as zero.
2-0
CPTS_RFTCLK_SEL
Reference clock select. This signal is used to control an external multiplexer that selects one of 8 clocks for time sync
reference (RFTCLK). This CPTS_RFTCLK_SEL value can be written only when the CPTS_EN bit is cleared to 0 in the
TS_CTL register.
000 = SYSCLK2
001 = SYSCLK3
010 = TIMI0
011 = TIMI1
1xx = Reserved
End of Table 7-76
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