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TMS320C5515
www.ti.com
SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
2.5.5
I2C Terminal Functions
Table 2-9. Inter-Integrated Circuit (I2C) Terminal Functions
SIGNAL
NAME
NO.
TYPE (1)
(2)
OTHER (3)
(4)
DESCRIPTION
I2C
SCL
SDA
B7
B8
I/O/Z
I/O/Z
DV DDIO
BH
DV DDIO
BH
This pin is the I2C clock output. Per the I2C standard, an external pullup is required
on this pin.
This pin is the I2C bidirectional data signal. Per the I2C standard, an external pullup
is required on this pin.
(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
Copyright ? 2010–2013, Texas Instruments Incorporated
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