TMS320C6455BCTZ Datasheet, PDF (72/256 Pages) Texas Instruments – TMS320C6455 Fixed-Point Digital Signal Processor

TMS320C6455
SPRS276M – MAY 2005 – REVISED MARCH 2012
www.ti.com
Table 3-13. Device Status Register (DEVSTAT) Field Descriptions (continued)
Bit Field
14 MCBSP1_EN
13 PCI66
12 Reserved
12 Reserved
11 PCI_EEAI
10:9 MACSEL[1:0]
8 Reserved
7 UTOPIA_EN
6 LENDIAN
5 HPI_WIDTH
4 AECLKINSEL
Value
0
1
0
1
0
1
00
01
10
11
0
1
0
1
0
1
0
1
Description
McBSP1 Enable (MCBSP1_EN) status bit
Shows the status of which function is enabled on the McBSP1/GPIO muxed pins.
GPIO pin functions enabled (default)
McBSP1 pin functions enabled
PCI Frequency Selection (PCI66) status bit
Shows the PCI operating frequency selected at reset.
PCI operates at 33 MHz (default)
PCI operates at 66 MHz
Reserved. Read-only, writes have no effect.
Reserved. Read-only, writes have no effect.
PCI I2C EEPROM Auto-Initialization (PCI_EEAI) status bit
Shows whether the PCI auto-initialization via external I2C EEPROM is enabled/disabled.
PCI auto-initialization through external I2C EEPROM is disabled; the PCI peripheral uses the
specified PCI default values (default).
PCI auto-initialization through external I2C EEPROM is enabled; the PCI peripheral is configured
through external I2C EEPROM provided the PCI peripheral pin is enabled (PCI_EN = 1).
EMAC Interface Select (MACSEL[1:0]) status bits
Shows which EMAC interface mode has been selected.
10/100 EMAC/MDIO with MII Interface (default)
10/100 EMAC/MDIO with RMII Interface
10/100/1000 EMAC/MDIO with GMII Interface
10/100/1000 EMAC/MDIO with RGMII Mode Interface
[RGMII interface requires a 1.8-V or 1.5-V I/O supply]
Reserved. Read-only, writes have no effect.
UTOPIA enable (UTOPIA_EN) status bit
Shows the status of which function is enabled on the UTOPIA/EMAC and UTOPIA/MDIO
multiplexed pins.
EMAC and MDIO pin functions are enabled (default)
UTOPIA pin functions are enabled
Device Endian mode (LENDIAN)
Shows the status of whether the system is operating in Big Endian mode or Little Endian mode
(default).
System is operating in Big Endian mode
System is operating in Little Endian mode (default)
HPI bus width control bit.
Shows the status of whether the HPI bus operates in 32-bit mode or in 16-bit mode (default).
HPI operates in 16-bit mode. (default)
HPI operates in 32-bit mode
EMIFA input clock select
Shows the status of what clock mode is enabled or disabled for EMIFA.
AECLKIN (default mode)
SYSCLK4 (CPU/x) Clock Rate. The SYSCLK4 clock rate is software selectable via the PLL1
Controller. By default, SYSCLK4 is selected as CPU/8 clock rate.
72
Device Configuration
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