AT48802 Datasheet, PDF (14/23 Pages) ATMEL Corporation – Spread- Spectrum Signal Processor Integrated Circuit

Register Functions
Function
Register
RESYNC
0
Force Load
0
RX Audio Mute
0
TX Audio Mute
0
Track
!Acquire
0
PN OUT
0
Master
!Slave
0
Operate
!Standby
0
RX-P1 through
RX-P8
1
RX-P9 through
RX-P13
2
PN EN
2
Bit #
0
1
2
3
4
5
6
7
0-7
0-4
5-6
RX-BW
2
7
TX-P1 through
TX-P8
3
0-7
TX-P9 through
TX-P13
4
0-4
Ring Func 0
4
5-6
Ring Func 1
2-14
AT48802
Description
0 = Normal PN counter operation.
1 = Re-synchronizes RX PN and TX PN generators to
the same counting state.
0 = No action.
1 = Forces an immediate loading of the TX PN
polynomial from the transmit polynomial register into the
PN generator and the RX PN polynomial from the
receive polynomial register into the RX PN generator.
0 = Sets a logic 0 to the RX MUTE pin 55.
1 = Sets a logic 1 to the RX MUTE pin 55.
0 = Sets a logic 0 to the TX MUTE pin 59.
1 = Sets a logic 1 to the TX MUTE pin 59.
0 = tau-dither on.
1 = tau-dither off.
0 = TX RX PN pin 25 is disabled and always low.
1 = TX RX PN pin 25 is enabled and toggles.
0 = Sets the unit to Slave mode of operation (Unit
receiving a link setup request).
1 = Master mode operation (Unit originating a link setup
request).
See section 2.2
Low-order receive PN polynomial (shift register tap
weights). P1 is LSB.
High-order receive PN polynomial (shift register tap
weights). P13 is MSB.
PN EN 0
PN EN 1
PN EN pin 22
0
0
0
0
1
Three-state
1
0
Three-state
1
1
1
0 = Disables receive diversity mode.
1 = Enables receive diversity mode.
Low-order transmit PN polynomial. P1 is LSB.
High-order transmit PN polynomial. P13 is MSB.
Ring F0
0
0
1
1
Ring F1
0
1
0
1
Ringer pin 62
0
Three-state
1875 Hz
1
(continued)