MC68181 Datasheet, PDF (85/119 Pages) Freescale Semiconductor, Inc – Advance Information ROAMING FLEX chip SIGNAL PROCESSOR

Freescale Semiconductor, Inc.
MC68181
Host-to-Decoder Packet Descriptions
Table B-23 Frame Range Bit Definition
f₂
f₁
f₀
AF₁₅
AF₀
0
0
0 Frame 127 Frame 112
0
0
1 Frame 111 Frame 96
0
1
0 Frame 95 Frame 80
0
1
1 Frame 79 Frame 64
1
0
0 Frame 63 Frame 48
1
0
1 Frame 47 Frame 32
1
1
0 Frame 31 Frame 16
1
1
1
Frame 15
Frame 0
ASSIGNED FRAME (AF)
If a bit is set, the FLEX chip IC will consider the corresponding frame to be assigned
via an address’s home frame and pager collapse. The value after reset = 0.
User Address Enable Packet
The User Address Enable Packet is used to enable and disable the 16 user address
words. Although the host is allowed to change the user address words while the
FLEX chip IC is decoding FLEX signals, the host must disable a user address word
before changing it. The ID of the User Address Enable Packet is 120 (decimal).
Table B-24 User Address Enable Packet Bit Assignments
Byte
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
3
0
1
1
1
1
0
0
0
2
0
0
0
0
0
0
0
0
1
UAE₁₅ UAE₁₄ UAE₁₃ UAE₁₂ UAE₁₁ UAE₁₀ UAE₉
UAE₈
0
UAE₇ UAE₆ UAE₅ UAE₄ UAE₃ UAE₂ UAE₁ UAE₀
When a User Address Enable (UAE) bit is set, the corresponding user address word is
enabled. When it is cleared, the corresponding user address word is disabled. UAE₀
corresponds to the user address word configured using a packet ID of 128, and
UAE₁₅ corresponds to the user address word configured using a packet ID of 143.
The value after reset = 0.
MOTOROLA
MC68181 Technical Data Sheet
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B-25