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SSI3 in SPI mode. Tiva's SSI1 interfaces to the ADS1255. The ADS1255 also generates a DRDY signal
when conversion is completed interrupting the Tiva processor through PP2. Tiva generates a
synchronization signal to the ADS1255 through PH6 to start an ADC conversion when a pattern is
displayed by the DLP2010NIR. To monitor the battery charger bq24250, PQ5 serves as a Tiva interrupt
and commands are sent through I2C9. PQ0, PQ1, and PQ2 allow Tiva to override default bq24250
parameters. The Wake and Scan buttons are connected to Tiva's WAKE and PQ3 pins. To measure
battery voltage, TIva enables an analog MOSFET switch with PD5 to connect the battery to Tiva's ADC7
and perform a voltage measurement. An expansion headers supports a combination of Tiva SSI0 and
UART4 pins. PF5, PH7, PL4 controls the green, blue, and yellow LED, respectively.
Charging
CC2564MODN
SLOW_CLK_IN
BT_ANT
Reset
DLPU030B – June 2015 – Revised July 2015
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BQ24250
EN1
EN2
CEZ
STAT
INT
SCL
SDA
Battery Monitor
BAT_V_SW
SENSE_EN
microSD
CLK
PF3/SSI3CLK
DIN
PF1/SSI3XDAT0
DOUT
PF0/SSI3XDAT1
CS
PF2/SSI3FSS
CARD_DET
PQ4 (I)
USB
USB0_VBUS
PB1/USB0VBUS
USB_ID
PB0/USB0ID
USB_DP
PL6/USBDP
USB_DM
PL7/USB0DM
LS
HCI_CTS
HCI_RX
LS
HCI_TX
HCI_RTS
nSUTD
LS
10K
JTAG Header
Expansion Header
Figure 4-2. DLP NIRscan Nano Tiva Connections
Copyright © 2015, Texas Instruments Incorporated
TM4C1297
PQ1 (O)
PQ0 (O)
PB6/I2C6SCL
PQ2 (O)
PB7/I2C6SDA
PQ5 (I)
PA0/I2C9SCL
PA1/I2C9SDA
PK5/EPI0S31
PN3/EPI0S30
PN2/EPI0S29
PB3/EPI0S28
PL3/EPI0S19
PL2/EPI0S18
PL1/EPI0S17
PD4/AIN7
PL0/EPI0S16
PD5 (O)
PM0/EPI0S15
PM1/EPI0S14
PM2/EPI0S13
PM3/EPI0S12
PG0/EPI0S11
PG1/EPI0S10
PA7/EPI0S9
PA6/EPI0S8
PC4/EPI0S7
PC5/EPI0S6
PC6/EPI0S5
PC7/EPI0S4
PH3/EPI0S3
PH2/EPI0S2
PH1/EPI0S1
PH0/EPI0S0
PB5/SSI1CLK
PP3/RTCCLK
PE4/SSI1XDAT0 (TX)
PE5/SSI1XDAT1 (RX)
PP4/U3RTS
PB4/SSI1FSS
PJ1/U3TX
PJ0/U3RX
PP5/U3CTS
PH5 (O)
PD0/I2C7SCL
PD1/I2C7SDA
PC0/TCK
PC1/TMS
PC2/TDI
PC3/TDO
RESETZ
PA2/SSI0CLK/U4RX
PA3/SSI0FSS/U4TX
PA4/SSI0DAT0
PA5/SSI0DAT1
WAKEz (I)
PK2/U4RTS
PK3/U4CTS
External Power Supply Requirements
OSC1
16MHz
OSC0
32.768KHz
HDC1000
SCL
SDA
PP7 (I)
DRDY
CLK
AS4C16M16
CKE
CSz
WEz
RASz
CASz
DQMH
DQML
D15
BA1/D14
BA0/D13
A12/D12
A11/D11
A10/D10
A9/D9
A8/D8
A7/D7
A6/D6
A5/D5
A4/D4
A3/D3
A2/D2
A1/D1
A0/D0
ADS1255
SCLK
DIN
DOUT
CSZ
SYNC
PH6 (O)
DRDY
PP2 (I)
TMP006
SCL
SDA
DRDRY
PP6 (I)
PF5 (O)
Power
PH7 (O)
Bluetooth
PL4 (O)
Scan
Wake
PQ3 (I)
Scan/BT
DLP NIRscan Nano Hardware
33
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