TCI6630K2L Datasheet, PDF (271/298 Pages) Texas Instruments – Multicore DSP+ARM KeyStone II System-on-Chip

www.ti.com
TCI6630K2L
SPRS893E – MAY 2013 – REVISED JANUARY 2015
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. See the Gigabit Ethernet (GbE) Switch Subsystem (1 GB) User's Guide (SPRUGV9) for the
register address and other details about the time synchronization submodule. The register
CPTS_RFTCLK_SEL for reference clock selection of the time synchronization submodule is shown in
Figure 11-55.
CPTS also allows 8 HW signal inputs for timestamping. Two of these signals are connected to
TSPUSHEVT0 and TSPUSHEVT1. The other 6 are connected to internal SyncE and timer signals. See
Table 11-56 for interconnectivity. Regarding the SyncE signal, see Section 9.2.3.32 for more details on
how to control this input. Furthermore, see the Gigabit Ethernet (GbE) Switch Subsystem (1 GB) User's
Guide (SPRUGV9) for details on how to enable HW timestamping on CPTS.
Table 11-56. CPTS Hardware Push Events
EVENT NUMBER
1
2
3
4
5
6
7
8
CONNECTION
syncE
XGE sync
Tspushevt1
Tspushevt0
Timi1
Timi0
Reserved
Reserved
Figure 11-55. RFTCLK Select Register (CPTS_RFTCLK_SEL)
31
Reserved
R-0
Legend: R = Read only; -x, value is indeterminate
4
3
0
CPTS_RFTCLK_SEL
RW - 0
Table 11-57. RFTCLK Select Register Field Descriptions
Bit
31-4
3-0
Field
Reserved
CPTS_RFTCLK_
SEL
Description
Reserved. Read as 0.
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.
• 0000 = SYSCLK2
• 0001 = SYSCLK3
• 0010 = TIMI0
• 0011 = TIMI1
• 0100 = TSIPCLKA
• 1000 = TSREFCLK
• 1100 = TSIPCLKB
• Others = Reserved
Copyright © 2013–2015, Texas Instruments Incorporated
TCI6630K2L Peripheral Information and Electrical Specifications 271
Submit Documentation Feedback
Product Folder Links: TCI6630K2L