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AS3900 Datasheet(PDF) 21 Page - ams AG

Part # AS3900
Description  27MHz Low Power Star Network Transceiver
PDF  59 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3900 Datasheet(HTML) 21 Page - ams AG

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www.austriamicrosystems.com/RF-Transceivers/AS3900
Revision 1.00c
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AS3900
Data Sheet - Detail ed Description
8.4.4 Send Single COMMAND byte
Command mode is entered if the SDI read is started with two leading ONE. After the COMMAND mode code (11), the further mode (e.g.
DATA_TRANSMIT) could be provided from the MSB to the LSB or <C5-C0>. If <C5-C0> = 0 no mode change (used for Load Transmitting Data).
Figure 18. Single COMMAND byte
A full command to change the Operation Mode of the AS3900 has a length of only 8 bit followed by an SEN LOW pulse. The AS3900 offers the
following direct commands.
Table 15. Direct Commands
Command Name
MODE Pattern (com. bits)
MODE Description
C5
C4
C3
C2
C1
C0
CHIP_RESET
000000
Software reset, takes 2ms to load PROM
IRQ_CLEAR
000001
Clear all interrupt registers
WAKE_TX
000100
Starts the wake-up call sequence, composed of OOK
TRANSMIT
000101
Initiates Tx sequence (depends on communication mode selected)
SCAN
000110
Master enters Rx mode for 1s or longer, if 'longscan' bit is set
PROM_COPY
001000
bank=1; copies the data from PPROM dprom registers REG 0x08 …
0x0A to register id0 in REG 0x08 … 0x0A
PROM_FUSE
001001
bank=1, fuseen=1; starts the PPROM fuse procedure
PROM_LOAD
001010
bank=1; load the fuse bits to PPROM registers
PROM_RST
001011
bank=1; resets the PPROM modes
MAIN_BANK
010000
Change selected bank to MAIN register
SHADOW_BANK
010001
Change selected bank to SHADOW register
POWER_OFF
010010
pwr bit off; clears all modes and stops timers; exceptions for bits
osc32f, reff, osc27f
POWER_ON
010011
pwr bit on
WAKE_RX_OFF
010100
Wake_rx bit off
WAKE_RX_ON
010101
Wake_rx bit on
STREAM_OFF
010110
Stream bit off
STREAM_ON
010111
Stream bit on
CLEAR_TIMER_0
100000
Deactivate timing system 0
CLEAR_TIMER_1
100001
Deactivate timing system 1
CLEAR_TIMER_2
100010
Deactivate timing system 2
CLEAR_TIMER_3
100011
Deactivate timing system 3
CLEAR_TIMER_4
100100
Deactivate timing system 4






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