TCI6636K2H Datasheet, PDF (337/362 Pages) Texas Instruments – Multicore DSP+ARM KeyStone II System-on-Chip (SoC)

TCI6636K2H
Multicore DSP+ARM KeyStone II System-on-Chip (SoC)
SPRS835F—October 2013
Table 10-58 AIF2 Timer Module Switching Characteristics
(see Figure 10-57)
No.
14 tw(EXTFRAMEEVENTH)
15 tw(EXTFRAMEEVENTL)
End of Table 10-58
Parameter
External Frame Event
Pulse width, EXTFRAMEEVENT output high
Pulse width, EXTFRAMEEVENT output low
1 C1 = tc(RP1CLKN/P)
Figure 10-57 AIF2 Timer External Frame Event Timing
14
15
EXT FRAME EVENT
Min
Max
Unit
4 * C1 ⁽¹⁾
ns
4 * C1
ns
10.29 Receive Accelerator Coprocessor (RAC)
The TCI6636K2H has two Receive Accelerator Coprocessor (RAC) subsystems. Each RAC subsystem is a receive
chip-rate accelerator based on a generic correlator coprocessor (GCCP). It supports Universal Mobile
Telecommunications System (UMTS) operations and assists in transferring data received from the antenna to the
receive core and performs receive functions that target the WCDMA macro bits.
The RAC subsystem consists of several components:
• Two GCCP accelerators for finger despread (FD), path monitor (PM), preamble detection (PD), and stream
power estimator (SPE)
• Back-end interface (BEI) for management of the RAC configuration and the data output.
• Front-end interface (FEI) for reception of the antenna data for processing and access to all MMRs
(memory-mapped registers) and memories in the RAC components
The RAC has a total of three ports connected to the switch fabric:
• BEI includes two master connections to the switch fabric for output data to device memory. One is 128-bit and
the other is 64-bit. Both are clocked at a SYSCLK1 divided by 3 or 4 rate.
• The FEI has a 64-bit slave connection to the switch fabric for input data as well as direct memory access (to
facilitate debug)
10.30 Transmit Accelerator Coprocessor (TAC)
The Transmit Accelerator Coprocessor (TAC) subsystem is a transmit chip-rate accelerator for support of UMTS
(Universal Mobile Telecommunications System) applications.
10.31 Fast Fourier Transform Coprocessor (FFTC)
There are four Fast Fourier Transform Coprocessors (FFTC) used to accelerate FFT, IFFT, DFT, and IDFT
operations. For more information, see the Fast Fourier Transform Coprocessor (FFTC) for KeyStone Devices User
Guide in 2.4 ‘‘Related Documentation from Texas Instruments’’ on page 19.
Copyright 2013 Texas Instruments Incorporated
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TCI6636K2H Peripheral Information and Electrical Specifications 337