MC68181 Datasheet, PDF (81/119 Pages) Freescale Semiconductor, Inc – Advance Information ROAMING FLEX chip SIGNAL PROCESSOR

Freescale Semiconductor, Inc.
MC68181
Host-to-Decoder Packet Descriptions
STEP ENABLE (SE)
The receiver setting is enabled when the bit is set. If a step in the warm up sequence is
disabled, the disabled step and all remaining steps will be skipped. The value after
reset = 0.
LOW BATTERY CHECK (LBC)
If this bit is set, the FLEX chip 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 FLEX chip IC is to wait before applying the next state’s receiver
control value to the receiver control lines. The setting is in steps of 625 µs. Valid
values are 625 µs (ST = $01) to 79.375 ms (ST = $7F). The value after reset = 625 µs.
3200 sps Sync Setting Packets
Byte
3
2
1
0
Table B-17 3200 sps Sync Setting Packet Bit Assignments
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
0
0
0
1
0
1
1
0
0
0
0
LBC
0
0
CLS₇
0
CLS₆
ST₆
CLS₅
ST₅
CLS₄
ST₄
CLS₃
ST₃
CLS₂
ST₂
CLS₁
ST₁
Bit 0
0
0
CLS₀
ST₀
LOW BATTERY CHECK (LBC)
If this bit is set, the FLEX chip 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 FLEX chip IC is to wait before expecting good signals on the
EXTS1 and EXTS0 signals after warming up. The setting is in steps of 625 µs. Valid
values are 625 µs (ST = $01) to 79.375 ms (ST = $7F). The value after reset = 625 µs.
MOTOROLA
MC68181 Technical Data Sheet
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B-21