TMS320DM642GDK600 datasheet(56/178 Pages) TI

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3.2

Configurations After Reset

3.2.1

Peripheral Selection After Device Reset

TMS320DM642

Video/Imaging Fixed-Point Digital Signal Processor

SPRS200J – JULY 2002 – REVISED AUGUST 2005

Table 3-3. DM642 Device Configuration Pins (TOUT1/LENDIAN, AEA[22:19], GP0[3]/PCIEEAI,

VDAC/GP0[8]/PCI66, HD5/AD5, PCI_EN, and MAC_EN) (continued)

CONFIGURATION

NO.

FUNCTIONAL DESCRIPTION

HPI peripheral bus width (HPI_WIDTH)

0 - HPI operates as an HPI16.

(HPI bus is 16 bits wide. HD[15:0] pins are used and the remaining HD[31:16] pins are reserved pins in

HD5/AD5

the Hi-Z state.)

1 - HPI operates as an HPI32.

(HPI bus is 32 bits wide. All HD[31:0] pins are used for host-port operations.)

(Also see the PCI_EN; TOUT0/MAC_EN functional description in this table)

Peripheral Selection

00 - HPI (default mode) [HPI32, if HD5 = 1; HPI16 if HD5 = 0

PCI_EN;

[E2; C5]

01 - EMAC and MDIO; HPI16, if HD5 = 0; HPI disabled, if HD5 = 1

TOUT0/MAC_EN

10 - PCI

11 - Reserved

Video Ports, McBSP1, McBSP0, McASP0 and I2C0

The DM642 device has designated registers for peripheral configuration (PERCFG), device status

(DEVSTAT), and JTAG identification (JTAGID). These registers are part of the Device Configuration

module and are mapped to a 4K block memory starting at 0x01B3F000. The CPU accesses these

registers via the CFGBUS.

The peripheral configuration register (PERCFG), allows the user to control the peripheral selection of the

Video Ports (VP0, VP1, VP2) McBSP0, McBSP1, McASP0, and I2C0 peripherals. For more detailed

information on the PERCFG register control bits, see Figure 3-1 and Table 3-4.

Reserved

R-0

Reserved

R-0

Reserved

R-0

Reserved

VP2EN

VP1EN

VP0EN

I2C0EN

MCBSP1EN

MCBSP0EN

MCASP0EN

R-0

R/W-0

R/W-1

R/W-0

Legend: R = Read only, R/W = Read/Write, -n = value after reset

Figure 3-1. Peripheral Configuration Register (PERCFG)

[Address Location: 0x01B3F000 - 0x01B3F003]

Device Configurations

TMS320DM642GDK600 Datasheet(PDF) 56 Page - Texas Instruments

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