SM320C6414-EP_16 Datasheet, PDF (31/93 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSORS

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SM320C6414-EP, SM320C6415-EP, SM320C6416-EP
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SGUS043D – MAY 2003 – REVISED SEPTEMBER 2008
Table 2-2. PCI_EN and MCBSP2_EN Peripheral Selection (HPI, GP[15:9], PCI, and McBSP2) (continued)
PERIPHERAL SELECTION⁽¹⁾
PERIPHERALS SELECTED
PCI_EN
PIN [AA4]
MCBSP2_EN
PIN [AF3]
HPI
GP[15:9]
PCI
EEPROM
(INTERNAL TO PCI)
McBSP2
1
0
(2)₁
1
√
√
√
√
(2) The only time McBSP2 is disabled is when both PCI_EN = 1 and MCBSP2_EN = 0. This configuration enables, at reset, the
auto-initialization of the PCI peripheral through the PCI internal EEPROM [provided the PCI EEPROM auto-initialization pin (BEA13) is
pulled up (EEAI = 1)]. The user then can enable the McBSP2 peripheral (disabling EEPROM) by dynamically changing MCBSP2_EN to
a 1 after the device is initialized (out of reset).
• If the PCI is disabled (PCI_EN = 0), the HPI peripheral is enabled and GP[15:9] pins can be
programmed as GPIO, provided the GPxEN and GPxDIR bits are properly configured.
This means all multiplexed HPI/PCI pins function as HPI and all stand-alone PCI pins (PCBE0 and
XSP_CS) are tied off (Hi-Z). Also, the multiplexed GPIO/PCI pins can be used as GPIO with the proper
software configuration of the GPIO Enable and Direction registers (for more details, see Table 2-4).
• If the PCI is enabled (PCI_EN = 1), the HPI peripheral is disabled.
This means all multiplexed HPI/PCI pins function as PCI. Also, the multiplexed GPIO/PCI pins function
as PCI pins (for more details, see Table 2-4).
• The MCBSP2_EN pin, in combination with the PCI_EN pin, controls the selection of the McBSP2
peripheral and the PCI internal EEPROM (for more details, see Table 2-2 and its footnotes).
2.2 Other Device Configurations
Table 2-3 describes the C6414, C6415, and C6416 devices configuration pins, which are set up via
external pullup/pulldown resistors through the specified EMIFB address bus pins (BEA[20:13, 11, 9:7]) and
the HD5 pin. For more details on these device configuration pins, see the Terminal Functions table and
the Debugging Considerations section.
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Device Configurations
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