SPI Packets

Host-to-Decoder Packet Descriptions

Receiver Control Configuration Packets

These packets allow the host to configure:

•what setting is applied to the receiver control lines S0–S7,

•how long to apply the setting, and,

•when to read the value of the LOBAT input pin.

For a more detailed description of how the FLEXchip IC uses these settings see

Receiver Control Configuration Packets on page B-14 .

The FLEXchip IC defines twelve different receiver control settings. The FLEXchip IC ignores these packets when decoding is enabled (i.e., the ON bit in the Control Packet is set). The IDs for these packets range from 16 to 27 (decimal).

Table B-11 Receiver Off Setting Packet Bit Assignments

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.

STEP TIME (ST)

This is the time the FLEXchip IC is to keep the receiver off before applying the first warm up state’s receiver control value to the receiver control lines. The setting is in steps of 625 s. Valid values are 625 s (ST = 01) to 159.375 ms (ST = FF in hexadecimal). (The value after reset = 625 s)