DEMOBOARD-U3600BM Atmel, DEMOBOARD-U3600BM Datasheet - Page 7

• Manufacturer Part Number: DEMOBOARD-U3600BM
• Description: BOARD DEMO FOR U3600BM
• Manufacturer: Atmel
• Type: Cordless Phone ICr

Specifications of DEMOBOARD-U3600BM

• Contents: Board, Software and Documentation
• For Use With/related Products: U3600BM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3.7
Figure 3-1.
Figure 3-2.
Figure 3-3.
4516D–CT0–10/05
Serial Bus Interface
Clock
Data
Serial Bus
Serial Bus Transmission
(D)
Serial Bus Structure
(C)
Clock
Data
The circuit is remoted by an external microcontroller through the serial bus.
The data is a 12-bit word:
A0 - A3: address of the destination register (0 to 15)
D7 - D0: contents of register
The data line must be stable when the clock is high and data must be serially shifted.
After 12 clock periods, the transfer to the destination register is (internally) generated by a low to
high transition of the data line when the clock is high.
D0
D1
processor
Micro-
D2
Address
Decoder
4
Word transmission
1st word
A0
Data
Clock
15
0
A1
A2
D
C
A3
Commands
Latches
128
8
Transfer condition
2nd word
U3600BM
7