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TMS320TCI6482
Communications Infrastructure Digital Signal Processor
SPRS246F–APRIL 2005–REVISED MAY 2007
The multiply factor of the PLL1 Controller is not selected through the configuration pins. The PLL1 multiply
factor is set in software through the PLL1 controller registers after device reset. The PLL2 multiply factor is
fixed. For more information, see
Section 8.7
,
PLL1 and PLL1 Controller
, and
Section 8.8
,
PLL2 and PLL2
Controller
.
On the TCI6482 device, the PCI peripheral pins are multiplexed with the HPI pins and partially multiplexed
with the UTOPIA pins. The PCI_EN pin selects the function for the HPI/PCI multiplexed pins. The PCI66,
PCI_EEAI, and HPI_WIDTH control other functions of the PCI and HPI peripherals.
Table 3-2
describes
the effect of the PCI_EN, PCI66, PCI_EEAI, and HPI_WIDTH configuration pins.
Table 3-2. PCI_EN, PCI66, PCI_EEAI, and HPI_WIDTH Peripheral Selection (HPI and PCI)
CONFIGURATION PIN SETTING
(1)
PCI66
PCI_EN PIN
AEA6 PIN
[Y29]
[U27]
0
0
0
0
PERIPHERAL FUNCTION SELECTED
PCI_EEAI
AEA8 PIN
[P25]
(1)
0
0
HPI_WIDTH
AEA14 PIN
[R25]
0
1
HPI DATA
LOWER
HPI DATA
UPPER
32-BIT PCI
(66-/33-MHz)
PCI
AUTO-INIT
Enabled
Enabled
Hi-Z
Enabled
Disabled
Disabled
N/A
N/A
Enabled
1
1
1
X
Disabled
(via External I2C
EEPROM)
Disabled
Disabled
(default values)
Enabled
(via External I2C
EEPROM)
Enabled
(66 MHz)
1
1
0
X
Disabled
1
0
0
X
Disabled
Enabled
(33 MHz)
1
0
1
X
Disabled
(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.
Table 3-3
describes the
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
PERIPHERAL FUNCTION SELECTED
MAC_SEL[1:0]
AEA[10:9] PINS
[M25, M27]
UTOPIA_EN
AEA12 PIN [R28]
PCI_EN PIN
[Y29]
EMAC/MDIO
UTOPIA
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
Interface
(1)
Disabled
10/100/1000 EMAC/MDIO with RGMII
Interface
(1)
0
x
00b
Disabled
0
x
01b
Disabled
0
x
10b
Disabled
0
x
11b
Disabled
1
0
00b, 01b, or 10b
UTOPIA Slave with Full Functionality
1
0
11b
UTOPIA Slave with Full Functionality
UTOPIA Slave with Single PHY Mode
Only
UTOPIA Slave with Single PHY Mode
Only
1
1
00b, 01b, or 10b
Disabled
10/100/1000 EMAC/MDIO with RGMII
Interface
(1)
1
1
11b
(1)
RGMII interface requires a 1.5-/1.8-V I/O supply.
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Device Configuration
57