Datasheet

I
2
C Mode www.ti.com
Table 1. SN65LVCP1414 EVM Pin and Jumper Functionality Description
Description
Ref Des Symbol
GPIO mode I
2
C mode
J1, J3 In0+, In0– Differential input, channel 0
J5, J7 In1+, In1– Differential input, channel 1
J9, J11 In2+, In2– Differential input, channel 2
J14, J16 In3+, In3– Differential input, channel 3
J2, J4 Out0+, Out0– Differential output, channel 0
J6, J8 Out1+, Out1– Differential output, channel 1
J10, J12 Out2+, Out2– Differential output, channel 2
J13, J15 Out3+, Out3– Differential output, channel 3
P1 VCC Banana jack, positive power-supply connection
P2 GND Banana jack, ground power-supply connection
J17 USB USB dongle connection
High, sets the high VOD range High, acts as chip select
JMP1 VOD/CS
Low, sets the low VOD range Low, disables the I
2
C interface
High, normal operation
JMP2 PD#
Low, power downs the device, inputs off and outputs disabled, resets the I
2
C
High, sets the high DC gain
JMP3 GAIN Don't care
Low, sets the low DC gain
Configures the device in I
2
C or GPIO mode of operation
JMP4 I2C_EN High, enables I
2
C mode
Low, enables GPIO mode
JMP5 EQ1/ADD1 3-level control for EQ gain I
2
C address
JMP6 EQ0/ADD0 3-level control for EQ gain I
2
C address
JMP7 EQ_MODE/ADD2 3-level control for EQ gain I
2
C address
High, disables driver peaking
JMP9 DRV_PK#/SCL I
2
C SCL pin
Low, enables driver 6 dB AC peaking
6 I
2
C Mode
Implement I
2
C mode by using the SN65LVCP1414 GUI software provided in the CD-ROM with the EVM.
See the SN65LVCP1414 EVM GUI User’s Guide (SLLU170) for details on using the GUI. Table 2 shows
the appropriate jumpers settings on the EVM for configuring the device in I
2
C mode. Refer to Appendix A
for jumper shunt settings.
The USB dongle implementing TI’s TUSB3210 microcontroller, connected to the EVM board through the
Samtec MEC1 connector, is the preferred method of controlling the SN65LVCP1414 register stack and is
the only way to interface the GUI with the board.
See the SN65LVCP1414 datasheet (SLLSEC5) for a detailed description of the register map.
Table 2. SN65LVCP1414 EVM I
2
C Mode Settings
Ref Des Symbol I
2
C Mode Pin Settings
JMP1 VOD/CS High, acts as chip select
High, normal operation
JMP2 PD#
Low, powers down the device, inputs off and outputs disabled, resets the I
2
C
JMP4 I2C_EN High, enables I
2
C mode
JMP5 EQ1/ADD1 Low
JMP6 EQ0/ADD0 Low
JMP7 EQ_MODE/ADD2 Low
JMP9 DRV_PK#/SCL Set in Mid position for SCL flow through from the USB card
8
SN65LVCP1414 Evaluation Module (EVM) SLLU169–July 20112
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