Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
705
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
37.4
Block Diagram
Figure 37-1. Block Diagram
37.5
Application Block Diagram
Figure 37-2. Application Block Diagram
37.5.1 I/O Lines Description
APB Bridge
PMC
MCK
Two-wire
Interface
PIO
AIC
TWI
Interrupt
TWCK
TWD
APB Bridge
PMC
MCK
Two-wire
Interface
PIO
Interrupt
Controller
TWI
Interrupt
TWCK
TWD
APB Bridge
PMC
MCK
Two-wire
Interface
PIO
Interrupt
Controller
TWI
Interrupt
TWCK
TWD
Host with
TWI
Interface
TWD
TWCK
Atmel TWI
Serial EEPROM
I²C RTC
I²C LCD
Controller
Slave 1
Slave 2
Slave 3
VDD
I²C Temp.
Sensor
Slave 4
Rp: Pull up value as given by the I²C Standard
Rp
Rp
Host with
TWI
Interface
TWD
TWCK
Atmel TWI
Serial EEPROM
I²C RTC
I²C LCD
Controller
Slave 1
Slave 2
Slave 3
VDD
I²C Temp.
Sensor
Slave 4
Rp: Pull up value as given by the I²C Standard
Rp
Rp
Table 37-3. I/O Lines Description
Pin Name
Pin Description
Type
TWD
Two-wire Serial Data
Input/Output
TWCK
Two-wire Serial Clock
Input/Output