Kane Industries C6713CPU - Manual (Page 40)

H ARDWARE R EFERENCE G UIDE
MICRO - LINE
®
C6713CPU
Date : 28 November 2005
Doc. no. : C6713CPU_HRG
Iss./Rev : 1.1
Page : 40
CLKS1 / SCL1:
This pin has a dual function:
• If configured for McBSP usage, this pin is the external input of the internal sample rate
generator used for McBSP1. If the transmitter and the receiver port function is not needed,
CLKS1 can also be used as general purpose input pin.
• If configured for I 2 C usage, this pin is the open collector clock line of I 2 C interface 1.
By default, this pin has a 10K pull-down resistor which is needed for McBSP interface usage. If this
pin is used for I
2 C interface #1, then a hardware pull-up resistor is required. Please refer to chapter
7.2.6 for details.
CLKS1 has a 22R series resistor. How to use this pin is described in [4] and [6] and [9].
TINP1 / AHCLKX0:
This pin has a dual function:
• If configured for timer usage, this pin is the external clock input of timer1. Low-to-high
transitions (or high-to-low transitions if INVINP = 1) will increment the timer counter. The
actual state of the TINP pin can be read by accessing the DATIN bit. This makes TINP1
also usable as general purpose input pin.
• If configured for McASP usage, this pin is the transmit high-frequency master clock of
McASP0.
TINP1 has a 22R series resistor. How to use this pin is described in [4], [6] and [7].
TINP0 / AXR0[3]:
This pin has a dual function:
• If configured for timer usage, this pin is the external clock input of timer 0. Low-to-high
transitions (or high-to-low transitions if INVINP = 1) will increment the timer counter. The
actual state of the TINP pin can be read by accessing the DATIN bit. This makes TINP1
also usable as general purpose input pin.
• If configured for McASP usage, this pin is a bi-directional data line of McASP0.
TINP0 has a 22R series resistor. How to use this pin is described in [4], [6] and [7].
CLKS0 / AHCLKR0:
This pin has a dual function:
• If configured for McBSP usage, this pin is the external input of the internal sample rate
generator used for McBSP0. If the transmitter and the receiver port function is not needed,
CLKS0 can also be used as general purpose input pin.
• If configured for McASP usage, this pin is the receive high-frequency master clock of
McASP0.
CLKS0 has a 22R series resistor. How to use this pin is described in [4], [6] and [7].