Cypress Semiconductor CY8C24894 Manuale Utente Scaricare il pdf (Pagina 31)

CY3240 USB-I2C Bridge Guide, Doc. # 001-66660 Rev.*B 31

Hardware

Figure 4-8. I2C Slave Interface Schematic

4.2.6 Demo Board

The demo board lights the two LEDs upon receiving data from the host and transfers the data,

acquired from the photo diode to the host.

The PSoC device (CY8C21123) is used to control the two LEDs based on input from the host using

the Bridge Control Panel. The PSoC device updates the I2C register with the sensor information,

which can be read by any I2C master.

Table 4-3. CY8C21123 Pin Connectivity

Pin No. Port No Description

6 P0[4] LED1

7 P0[2] LED2

1 P0[5] Photo-diode

8 P1[0] Voltage supply

3 P1[1] Ground

2 P0[3] Interrupt

5 Vcc Serial clock

4 GND Serial data

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 63 64

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Cypress Semiconductor CY8C24894 Manuale Utente Pagina 31