MC68181 Datasheet, PDF (83/119 Pages) Freescale Semiconductor, Inc – Advance Information ROAMING FLEX chip SIGNAL PROCESSOR

Freescale Semiconductor, Inc.
MC68181
Host-to-Decoder Packet Descriptions
Receiver Shut Down Setting Packets
Byte
3
2
1
0
Table B-20 Receiver Shut Down Setting Packet Bit Assignments
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
0
0
0
1
1
0
1
SE
0
0
0
LBC
0
0
CLS₇
0
CLS₆
0
CLS₅
ST₅
CLS₄
ST₄
CLS₃
ST₃
CLS₂
ST₂
CLS₁
ST₁
Bit 0
s
0
CLS₀
ST₀
SETTING NUMBER (s)
These bits 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-21 Setting Number Bit Definitions
s Setting Name
0 Shut Down 1
1 Shut Down 2
STEP ENABLE (SE)
The receiver setting is enabled when the bit is set. If a step in the shut down 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 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 39.375 ms (ST = $3F). The value after reset = 625 µs.
MOTOROLA
MC68181 Technical Data Sheet
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B-23