PNI SENtral - Manual (Page 10)

PNI Sensor Corporation Doc #1018049 R03
SENtral Technical Data Sheet Page 9
3.2 Pin Assignments
SENtral’s pin-out is a 4x4 ball-grid array, as defined in Figure 7-1. The table below provides
the pin assignments.
Table 3-1: SENtral Pin Assignments
Pin# Pin Name I/O Type* Description
D1 V
DD
PWR Supply voltage
D3 VCAP PWR
External compensation capacitor for internal core
voltage regulator
D2 GND PWR Ground
C3 SA0 I I
2
C slave address bit [0]
B1 SCL
S
IO I
2
C host bus SCL clock line
A1 SDA
S
IO I 2 C host bus SDA data line
B4 SCL
M
IO I
2
C sensor bus SCL clock line
A4 SDA
M
IO I
2
C sensor bus SDA data line
D4 GPIO[0] IO / PUPD General Purpose IO – Default mag interrupt
C4 GPIO[1] IO / PUPD General Purpose IO – Default accel interrupt
A3 GPIO[2] IO / PUPD General Purpose IO – Default gyro interrupt
B3 GPIO[3] IO / PUPD General Purpose IO – Default not connected
A2 GPIO[4] IO / PUPD General Purpose IO – Default not connected
B2 GPIO[5] IO / PUPD General Purpose IO – Default not connected
C1 GPIO[6] IO / PUPD General Purpose IO – Default host interrupt
C2 RES - Not Used – Connect to Ground
*I/O Types are:
PWR: Power supply Connections
I:
Digital Input
IO: Digital Input / Output
PU: Pull-Up
PD: Pull-Down