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SPI Packets

Host-to-Decoder Packet Descriptions

Receiver Warm Up Setting Packets

Table B-12 Receiver Warm Up Setting Packet Bit Assignments

Byte

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

0

0

0

1

s3

s2

s1

s0

 

 

 

 

 

 

 

 

 

2

SE

0

0

0

LBC

0

0

0

 

 

 

 

 

 

 

 

 

1

CLS7

CLS6

CLS5

CLS4

CLS3

CLS2

CLS1

CLS0

 

 

 

 

 

 

 

 

 

0

0

ST6

ST5

ST4

ST3

ST2

ST1

ST0

 

 

 

 

 

 

 

 

 

SETTING NUMBER (s)

These bit define the receiver control setting for which this packet’s values are to be applied. The following truth table shows the names of each of the values for s that apply to this packet.

Table B-13 Setting Number Bit Combinations

s3

s2

s1

s0

Setting Name

 

 

 

 

 

 

 

 

 

 

0

0

0

1

Warm Up 1

 

 

 

 

 

0

0

1

0

Warm Up 2

 

 

 

 

 

0

0

1

1

Warm Up 3

 

 

 

 

 

0

1

0

0

Warm Up 4

 

 

 

 

 

0

1

0

1

Warm Up 5

 

 

 

 

 

STEP ENABLE (SE)

The receiver setting is enabled when the bit is set. If a step in the warm up sequence is disabled, all steps following the disabled step will be ignored. The value after reset = 0.

LOW BATTERY CHECK (LBC)

If this bit is set, the FLEXchip IC will check the status of the LOBAT port just before leaving this receiver state. The value after reset = 0.

CONTROL LINE SETTING (CLS)

This is the value to be output on the receiver control lines (S0–S7) for this receiver state. The value after reset = 0.

MOTOROLA

MC68175/D, Preliminary

B-15

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