U3501BM Просмотр технического описания (PDF) - Temic Semiconductors

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U3501BM

Cordless Telephone Signal Processor

Temic Semiconductors 

U3501BM

Serial Bus Interface

The circuit is remoted by an external microcontroller

trough the serial bus.

The data is an 12 – bit word:

B11 – B8: address of the destination register (0 to 15)

B7 – B0: 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 reg-

ister is (internally) generated by a low to high transition

of the data line when the clock is high.

Micro-

processor

Data

Clock

Figure 10.

D

C

96 11787

Data

(D)

Clock

(C)

b0 b1 b2

b9 b10 b11

1st word

Word transmission

Figure 11. Serial bus transmission

2nd word

Transfer condition

96 11788

Data

Clock

4

0

Address

Decoder

15

Figure 12.

8

128 latches

Commands

96 11789

14 (20)

TELEFUNKEN Semiconductors

Preliminary Information

Rev. A1, 29-Jul-96

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