Datasheet
TMS320F28069, TMS320F28068, TMS320F28067, TMS320F28066
TMS320F28065, TMS320F28064, TMS320F28063, TMS320F28062
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SPRS698D –NOVEMBER 2010–REVISED DECEMBER 2012
Table 5-59. HRCAP Registers
SIZE
NAME HRCAP1 HRCAP2 HRCAP3 HRCAP4 DESCRIPTION
(x16)
HCCTL 0x6AC0 0x6AE0 0x6C80 0x6CA0 1 HRCAP Control Register
(1)
HCIFR 0x6AC1 0x6AE1 0x6C81 0x6CA1 1 HRCAP Interrupt Flag Register
HCICLR 0x6AC2 0x6AE2 0x6C82 0x6CA2 1 HRCAP Interrupt Clear Register
HCIFRC 0x6AC3 0x6AE3 0x6C83 0x6CA3 1 HRCAP Interrupt Force Register
HCCOUNTER 0x6AC4 0x6AE4 0x6C84 0x6CA4 1 HRCAP 16-bit Counter Register
HRCAP Capture Counter on
HCCAPCNTRISE0 0x6AD0 0x6AF0 0x6C90 0x6CB0 1
Rising Edge 0 Register
HRCAP Capture Counter on
HCCAPCNTFALL0 0x6AD2 0x6AF2 0x6C92 0x6CB2 1
Falling Edge 0 Register
HRCAP Capture Counter on
HCCAPCNTRISE1 0x6AD8 0x6AF8 0x6C98 0x6CB8 1
Rising Edge 1 Register
HRCAP Capture Counter on
HCCAPCNTFALL1 0x6ADA 0x6AFA 0x6C9A 0x6CBA 1
Falling Edge 1 Register
(1) Registers that are EALLOW-protected.
5.20.1 High-Resolution Capture (HRCAP) Electrical Data/Timing
Table 5-60. High-Resolution Capture (HRCAP) Timing Requirements
MIN NOM MAX UNIT
t
c(HCCAPCLK)
Cycle time, HRCAP capture clock 8.333 10.204 ns
t
w(HRCAP)
Pulse width, HRCAP capture 7t
c(HCCAPCLK)
(1)
ns
HRCAP step size
(2)
300 ps
(1) The listed minimum pulse width does not take into account the limitation that all relevant HCCAP registers must be read and RISE/FALL
event flags cleared within the pulse width to ensure valid capture data.
(2) HRCAP step size will increase with low voltage and high temperature and decrease with high voltage and low temperature. Applications
that use the HRCAP in high-resolution mode should use the HRCAP calibration functions to dynamically calibrate for varying operating
conditions.
Copyright © 2010–2012, Texas Instruments Incorporated Peripheral and Electrical Specifications 137
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