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TMS320TCI6482
Communications Infrastructure Digital Signal Processor
SPRS246F–APRIL 2005–REVISED MAY 2007
Table 3-1. TCI6482 Device Configuration Pins (AEA[19:0], ABA[1:0], and PCI_EN) (continued)
CONFIGURATION
PIN
IPD/
IPU
(1)
NO.
FUNCTIONAL DESCRIPTION
HPI peripheral bus width select (HPI_WIDTH).
0
HPI operates in HPI16 mode (default).
HPI bus is 16 bits wide; HD[15:0] pins are used and the remaining HD[31:16]
pins are reserved pins in the Hi-Z state.
1
HPI operates in HPI32 mode.
HPI bus is 32 bits wide; HD[31:0] pins are used.
Applies only when HPI function of HPI/PCI multiplexed pins is selected (PCI_EN pin = 0).
Device Endian mode (LENDIAN).
0
System operates in Big Endian mode.
1
System operates in Little Endian mode (default).
UTOPIA pin function enable bit (UTOPIA_EN).
This pin selects the function of the UTOPIA/EMAC and UTOPIA/MDIO multiplexed pins.
0
UTOPIA pin function disabled; EMAC and MDIO pin function enabled (default).
This means all multiplexed UTOPIA/EMAC and UTOPIA/MDIO pins function as
EMAC and MDIO pins. The interface used by EMAC/MDIO (MII, RMII, GMII or
the standalone RGMII) is controlled by the MACSEL[1:0] pins (AEA[10:9]).
1
UTOPIA pin function enabled; EMAC and MDIO pin function disabled.
This means all multiplexed UTOPIA/EMAC and UTOPIA/MDIO pins now function
as UTOPIA. The EMAC/MDIO peripheral can still be used with RGMII
(MACSEL[1:0] = 11).
For proper TCI6482 device operation, this pin must be externally pulled up with a 1-k
resistor at device reset.
EMAC Interface Selects (MACSEL[1:0]).
These pins select the interface used by the EMAC/MDIO peripheral.
00
10/100 EMAC/MDIO with MII Interface [default]
01
10/100 EMAC/MDIO with RMII Interface
10
10/100/1000 EMAC/MDIO with GMII Interface
11
10/100/1000 EMAC/MDIO with RGMII Interface
If the UTOPIA pin function is selected [UTOPIA_EN (AEA12 pin) = 1] for multiplexed
UTOPIA/EMAC and UTOPIA/MDIO pins, the EMAC/MDIO peripheral can only be used with
RGMII.
For more detailed information on the UTOPIA_EN and MAC_SEL[1:0] control pin selections,
see
Table 3-3
.
PCI I2C EEPROM Auto-Initialization (PCI_EEAI).
PCI auto-initialization via external I2C EEPROM
0
PCI auto-initialization through external I2C EEPROM is disabled. The PCI
peripheral uses the specified PCI default values (default).
1
PCI auto-initialization through external I2C EEPROM is enabled. The PCI
peripheral is configured through external I2C EEPROM provided the PCI
peripheral pins are enabled (PCI_EN = 1).
Note:
If the PCI pin function is disabled (PCI_EN pin = 0), this pin must
not
be pulled up.
VLYNQ pin function enable bit (VLYNQ_EN).
This pin selects the function of the VLYNQ/McBSP1/GPIO and VLYNQ/McBSP0 multiplexed
pins.
0
VLYNQ pin function is disabled; McBSP1/GPIO and McBSP0 pin functions are
enabled (default).
This means all multiplexed VLYNQ/McBSP1/GPIO pins function as
McBSP1/GPIO pins and all multiplexed VLYNQ/McBSP0 pins function as
McBSP0 pins. The function of the McBSP1/GPIO pins is determined by the
McBSP1_EN pin (AEA5).
1
VLYNQ pin function enabled; McBSP1/GPIO and McBSP0 pin functions are
disabled.
This means all multiplexed VLYNQ/McBSP1/GPIO and VLYNQ/McBSP0 pins
function as VLYNQ.
AEA14
R25
IPD
AEA13
R27
IPU
AEA12
R28
IPD
AEA11
T25
IPD
[M25,
M27]
AEA[10:9]
IPD
AEA8
P25
IPD
AEA7
N27
IPD
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Device Configuration
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