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SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
Table 2-16. MMC0/SD Terminal Functions
SIGNAL
NAME
NO.
TYPE (1)
(2)
OTHER (3)
(4)
DESCRIPTION
MMC/SD
This pin is multiplexed between MMC0, I2S0, and GPIO.
MMC0_CLK/
I2S0_CLK/
GP[0]
L10
I/O/Z
IPD
DV DDIO
BH
For MMC/SD, this is the MMC0 data clock output MMC0_CLK.
Mux control via the SP0MODE bits in the EBSR. The IPD resistor on this pin can be
enabled or disabled via the PDINHIBR1 register.
This pin is multiplexed between MMC0, I2S0, and GPIO.
MMC0_CMD/
I2S0_FS/
GP[1]
M11
I/O/Z
IPD
DV DDIO
BH
For MMC/SD, this is the MMC0 command I/O output MMC0_CMD.
Mux control via the SP0MODE bits in the EBSR. The IPD resistor on this pin can be
enabled or disabled via the PDINHIBR1 register.
MMC0_D3/
GP[5]
MMC0_D2/
GP[4]
MMC0_D1/
I2S0_RX/
GP[3]
MMC0_D0/
I2S0_DX/
L11
L12
M10
L9
I/O/Z
I/O/Z
I/O/Z
I/O/Z
IPD
DV DDIO
BH
IPD
DV DDIO
BH
IPD
DV DDIO
BH
IPD
DV DDIO
The MMC0_D3 and MMC0_D2 pins are multiplexed between MMC0 and GPIO.
The MMC0_D1 and MMC0_D0 pins are multiplexed between MMC0, I2S0, and
GPIO.
In MMC/SD mode, these pins are the MMC0 nibble wide bi-directional data bus.
Mux control via the SP0MODE bits in the EBSR.
The IPD resistor on these pins can be enabled or disabled via the PDINHIBR1
register.
GP[2]
BH
(1)
(2)
(3)
(4)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to
float. When they are configured as input or high-impedance state, and not driven to a known state, they may cause an excessive IO-
supply current. Prevent this current by externally terminating it or enabling IPD/IPU, if applicable.
IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see Section 3.8.1 , Pullup/Pulldown Resistors .
Specifies the operating I/O supply voltage for each signal
36
Device Overview
Product Folder Links: TMS320C5515
Copyright ? 2010–2013, Texas Instruments Incorporated
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