Texas Instruments TMS320C6454 - Manual (Page 29)

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PRODUCT PREVIEW
TMS320C6454
Fixed-Point Digital Signal Processor
SPRS311A – APRIL 2006 – REVISED DECEMBER 2006
Table 2-3. Terminal Functions (continued)
SIGNAL
TYPE (1) IPD/IPU (2) DESCRIPTION
NAME NO.
AEA10/MACSEL1 M25 • EMAC/MDIO interface select bits (MACSEL[1:0])
There are two configuration pins — MACSEL[1:0] — to select the
AEA9/MACSEL0 M27
EMAC/MDIO interface.
AEA8/PCI_EEAI P25
AEA[10:9]: MACSEL[1:0]
AEA7 N27 00 - 10/100 EMAC/MDIO MII Mode Interface (default)
01 - 10/100 EMAC/MDIO RMII Mode Interface
AEA6/PCI66 U27
10 - 10/100/1000 EMAC/MDIO GMII Mode Interface
AEA5/MCBSP1_EN U28 11 - 10/100/1000 with RGMII Mode Interface
AEA4/ [RGMII interface requires a 1.8 V or 1.5 V I/O supply]
T28
SYSCLKOUT_EN •
PCI I2C EEPROM Auto-Initialization (PCI_EEAI)
AEA3 T27 AEA8: PCI auto-initialization via external I2C EEPROM
If the PCI peripheral is disabled (PCI_EN pin = 0), this pin must not be
AEA2/CFGGP2 T26
pulled up.
AEA1/CFGGP1 U26 0 - PCI auto-initialization through I2C EEPROM is disabled (default).
1 - PCI auto-initialization through I2C EEPROM is enabled.
•
PCI Frequency Selection (PCI66)
[The PCI peripheral needs be enabled (PCI_EN = 1) to use this function]
Selects the PCI operating frequency of 66 MHz or 33 MHz PCI operating
frequency is selected at reset via the pullup/pulldown resistor on the PCI66
pin:
AEA6:
O/Z IPD
0 - PCI operates at 33 MHz (default).
1 - PCI operates at 66 MHz.
Note: If the PCI peripheral is disabled (PCI_EN = 0), this pin must not be
pulled up.
• McBSP1 Enable bit (MCBSP1_EN)
Selects which function is enabled on the McBSP1/GPIO muxed pins
AEA5:
AEA0/CFGGP0 U25 0 - GPIO pin functions enabled (default).
1 - McBSP1 pin functions enabled.
•
SYSCLKOUT Enable bit (SYSCLKOUT_EN)
Selects which function is enabled on the SYSCLK4/GP[1] muxed pin
AEA4:
0 - GP[1] pin function of the SYSCLK4/GP[1] pin enabled (default).
1 - SYSCLK4 pin function of the SYSCLK4/GP[1] pin enabled.
•
Configuration GPI (CFGGP[2:0]) (AEA[2:0])
These pins are latched during reset and their values are shown in the
DEVSTAT register. These values can be used by software routines for boot
operations.
AEA3:
For proper C6454 device operation, the AEA3 pin must be pulled down to V
SS
with a 1-k
Ω
resistor at device reset.
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