Peripheral Selection After Device Reset - Texas Instruments TMS320C6455 Manual

TMS320C6455
SPRS276M – MAY 2005 – REVISED MARCH 2012
Table 3-2. PCI_EN, PCI66, PCI_EEAI, and HPI_WIDTH Peripheral Selection (HPI and PCI)
CONFIGURATION PIN SETTING
PCI66
PCI_EN PIN
AEA6 PIN
[Y29]
[U27]
0 0
0 0
1 1
1 1
1 0
1 0
(1) PCI_EEAI is latched at reset as a configuration input. If PCI_EEAI is set as one, then default values are loaded from an external I2C
EEPROM.
The UTOPIA and EMAC/MDIO pins are also multiplexed on the TCI6482 device. The UTOPIA_EN
function (AEA12 pin) controls the function of these multiplexed pins. The MAC_SEL[1:0] configuration pins
(AEA[10:9) control which interface is used by the EMAC/MDIO. Note that since the PCI shares some pins
with the UTOPIA peripheral, its state also affects the operation of the UTOPIA.
effect of the UTOPIA_EN, PCI_EN, and MACSEL[1:0] configuration pins.
Table 3-3. UTOPIA_EN, and MAC_SEL[1:0] Peripheral Selection (UTOPIA and EMAC)
CONFIGURATION PIN SETTING
UTOPIA_EN PCI_EN PIN
AEA12 PIN [R28] [Y29]
0 x
0 x
0 x
0 x
1 0
1 0
1 1
1 1
(1) RGMII interface requires a 1.5-/1.8-V I/O supply.
3.3

Peripheral Selection After Device Reset

On the C6455 device, peripherals can be in one of several states. These states are listed in
58 Device Configuration
(1)
PCI_EEAI HPI_WIDTH
AEA8 PIN AEA14 PIN
(1)
[P25] [R25]
0 0
0 1
1 X
0 X
0 X
1 X
MAC_SEL[1:0]
AEA[10:9] PINS
[M25, M27]
10/100 EMAC/MDIO with MII Interface
00b
[default]
10/100 EMAC/MDIO with RMII
01b
Interface
10/100/1000 EMAC/MDIO with GMII
10b
Interface
10/100/1000 EMAC/MDIO with RGMII
11b
Interface
00b, 01b, or 10b Disabled
10/100/1000 EMAC/MDIO with RGMII
11b
Interface
00b, 01b, or 10b Disabled
10/100/1000 EMAC/MDIO with RGMII
11b
Interface
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PERIPHERAL FUNCTION SELECTED
HPI DATA HPI DATA
LOWER UPPER
Enabled Hi-Z
Enabled Enabled
Disabled
Disabled
Disabled
Disabled
PERIPHERAL FUNCTION SELECTED
EMAC/MDIO
(1)
(1)
(1)
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TMS320C6455
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32-BIT PCI PCI
(66-/33-MHz) AUTO-INIT
Disabled N/A
Disabled N/A
Enabled
(via External I2C
Enabled
EEPROM)
(66 MHz)
Disabled
Disabled
(default values)
Enabled
Enabled
(33 MHz)
(via External I2C
EEPROM)
Table 3-3 describes the
UTOPIA
Disabled
Disabled
Disabled
Disabled
UTOPIA Slave with Full Functionality
UTOPIA Slave with Full Functionality
UTOPIA Slave with Single PHY Mode
Only
UTOPIA Slave with Single PHY Mode
Only
Table 3-4.