L9654 datasheet(53/59 Pages) STMICROELECTRONICS

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L9654

Functional description

Table 38. "B" protocol configuration

Bit D7

Bit D6

Protocol Data Field

8bits(default)

9bits

10bits

11bits

Bits[9:8]

These bits shall configure speed selection for any of the satellite channels and they apply to

both "A" and the "B" Manchester protocol. Upon power up or reset the protocol configuration

shall initialize to the default speed as it is shown in the below table.

Table 39. Bit time selection

Bit D9

Bit D8

Guaranteed frequency operating range (Hz)

13.3k to 52.33k (default)

26.32k to 110.74k

43.50k to 164.20k

62.66k to 250k

Bits[11:10]

These bits are used to determine the requested information from each of the satellite

channels internal registers. At power up or in case of POR condition these bits are initialized

to 00 by the IC and MISO bits <12:0> shall default to the content of the MCR register.

Table 40. Mode select

Bit D11

Bit D10

Definition

00/01/10

Report This on Next MISO

Bit 13 = SPI odd parity

Bits<15:14

11 (Configuration Reports Mode)

If the previous command is a write to the MCR

Report <12:0> Table 35 (MCR) only for CH1

If previous command is a write to the CCRx

Report <12:0> Table 36 (CCR)

Report <12:0>Table 35 (MCR) (CH1 Only)

Report <12:0>Table 36 (CCR)

Report This on Next MISO

Bit 13 = SPI odd parity

Bits<15:14

 (Satellite Status 00,01 or 10)

Report FIFO data

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