Texas Instruments BUF12800 Evaluation Module BUF12800EVM BUF12800EVM 데이터 시트
제품 코드
BUF12800EVM
Test Outputs
25-Pin Male
DSUB
External BUF12800
Analog Power Supply
T1
V
Supply
(V
Power Supply)
DUT
SD
I C Interface
2
I C A0 Address
Jumper
2
TP1
Test Point
Header
Header
J1
BUF12800
BUF12800EVM Hardware Setup
2.1
Theory of Operation for BUF12800 Hardware
shows the BUF12800 test board hardware setup. The functionality of the PCB is such that it
provides connections to the I
2
C
™
and general-purpose inputs/outputs (GPIOs) on the USB DIG Platform
board. It also provides connection points for external connections of the shunt voltage, bus voltage, and
ground.
ground.
Figure 3. BUF12800EVM Board Block Diagram
2.2
Signal Definitions of J1 (25-Pin Male DSUB)
shows the various signals connected to J1 on the BUF12800 test board.
Table 3. J1 Signal Definition for BUF12800EVM
Pin No on U1
Signal
BUF12800 Pin
1
N/C
No connection
2
N/C
No connection
3
N/C
No connection
4
N/C
No connection
5
N/C
No connection
6
N/C
No connection
7
N/C
No connection
8
N/C
No connection
9
I2C_SCK
No connection
10
I2C_SDA2
No connection
11
N/C
No connection
12
I2C_SCK_ISO
I
2
C clock signal (SCL) channel 1; can be
disconnected using a switch
13
I2C_SDA_ISO
I
2
C data signal (SDA) channel 1; can be
disconnected using a switch
14
N/C
No connection
15
N/C
No connection
16
N/C
No connection
17
V
DUT
Switched 3-V/5-V power
(1)
18
V
CC
No connection
19
N/C
No connection
20
N/C
No connection
21
GND
Common ground connection
22
SPI_SCK
No connection
23
SPI_CS1
No connection
24
SPI_DOUT1
No connection
25
SPI_DIN1
No connection
(1)
When power is switched off, digital I/O is also switched off.
4
BUF12800EVM Evaluation Board and Software Tutorial
SBOU116
–
September 2011
Copyright
©
2011, Texas Instruments Incorporated