TMS320C6452 Datasheet, PDF (127/181 Pages) Texas Instruments – TMS320C6452 Digital Signal Processor

TMS320C6452
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SPRS371F – OCTOBER 2007 – REVISED APRIL 2012
6.14 Host-Port Interface (HPI) Peripheral
6.14.1 HPI Device-Specific Information
The device includes a user-configurable 16-bit or 32-bit host-port interface (HPI16/HPI32). The AEA14 pin
controls the HPI_WIDTH, allowing the user to configure the HPI as a 16-bit or 32-bit peripheral.
Software handshaking via the HRDY bit of the Host Port Control Register (HPIC) is not supported.
An HPI boot is terminated using a DSP interrupt. The DSP interrupt is registered in bit 0 (channel 0) of the
EDMA Event Register (ER). This event must be cleared by software before triggering transfers on DMA
channel 0.
6.14.2 HPI Peripheral Register Description(s)
Table 6-56. HPI Control Registers
HEX ADDRESS RANGE
ACRONYM
REGISTER NAME
COMMENTS
0x0200 0000
PID
Peripheral Identification Register
0x0200 0004
PWREMU_MGMT
HPI power and emulation management
register
PWREMU_MGMT has both host/CPU
read/write access.
0x0200 0008 - 0x0200 0024
-
Reserved
0x0200 0028
-
Reserved
0x0200 002C
-
Reserved
0x0200 0030
HPIC
HPI control register
The host and the CPU have read/write
access to the HPIC register.⁽¹⁾
0x0200 0034
0x0200 0038
HPIA
(HPIAW) ⁽²⁾
HPIA
(HPIAR) ⁽²⁾
HPI address register
(Write)
HPI address register
(Read)
The host has read/write access to the
HPIA registers. The CPU has read
access only to the HPIA registers.
0x0200 003C - 0x0200 007F
-
Reserved
(1) The CPU can write 1 to the HINT bit to generate an interrupt to the host and it can write 1 to the DSPINT bit to clear/acknowledge an
interrupt from the host.
(2) There are two 32-bit HPIA registers: HPIAR for read operations and HPIAW for write operations. The HPI can be configured such that
HPIAR and HPIAW act as a single 32-bit HPIA (single-HPIA mode) or as two separate 32-bit HPIAs (dual-HPIA mode) from the
perspective of the host. The CPU can access HPIAW and HPIAR independently. For details about the HPIA registers and their modes,
see the TMS320C6452 DSP Host Port Interface (HPI) User's Guide (literature number SPRUF87).
Copyright © 2007–2012, Texas Instruments Incorporated
Peripheral Information and Electrical Specifications 127
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