Spi Mode; I2C Mode - Profichip VPC3+S User Manual

3.2.5

SPI Mode

The VPC3+S can be interfaced like an SPI compatible memory device.
Depending on the setting of CPOL and CPHA four different SPI modes can
be selected. All unused inputs (including DB[7:0]) must be connected to
GND.
Ball Pin
Signal Name
BGA QFP
E3 9 SERMODE
E4 28 MOT/XINT
D4 33 MODE
C2 2 SPI_CPOL
B3 44 SPI_CPHA
C1 3 SPI_XSS
A1 48 SPI_SCK
B1 1 SPI_MOSI
A2 47 SPI_MISO
Figure 3-8: Interface Configuration: SPI Mode
3.2.6

I2C Mode

The VPC3+S can be interfaced like an I2C compatible memory device. The
VPC3+S is always in slave mode, master mode is not supported. The slave
address can be configured by using the AB[6:0] inputs. All unused inputs
(including DB[7:0]) must be connected to GND.
Ball Pin
Signal Name
BGA QFP
E3 9 SERMODE
E4 28 MOT/XINT
D4 33 MODE
C3 45 I2C_SA6
B2 46 I2C_SA5
B4 41 I2C_SA4
A5 38 I2C_SA3
A6 37 I2C_SA2
B5 39 I2C_SA1
B6 36 I2C_SA0
A1 48 I2C_SCK
A2 47 I2C_SDA
Figure 3-9: Interface Configuration: I2C Mode
VPC3+S User Manual
Copyright © profichip GmbH, 2012
In/Out Description
'1': Serial Interface
I
'0': not used in this mode
I
'0': SPI Mode
I
I Clock Polarity
I Clock Phase
I Slave-Select Signal (active low)
I(S) Serial Clock
I Master-Out-Slave-In (Serial Data Input)
O Master-In-Slave-Out (Serial Data Output)
In/Out Description
'1': Serial Interface
I
'0': not used in this mode
I
'1': I2C Mode
I
I
I
I
I I2C Slave Address
I
I
I
I(S) Serial Clock
I(S) / O Serial Data Line
Revision 1.04
Pin Description 3
Connect to
VCC
GND
GND
VCC or GND
VCC or GND
CPU Slave-Select
CPU SCK
CPU MOSI
CPU MISO
Connect to
VCC
GND
VCC
VCC or GND
VCC or GND
VCC or GND
VCC or GND
VCC or GND
VCC or GND
VCC or GND
CPU SCK
CPU SDA
17