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SX1230
Integrated Transmitter IC
ADVANCED COMMUNICATIONS & SENSING
NSS
DATASHEET
SCK
t nl
t ch
t nh
t cl
New Address (A1)
t setup t hold
New Data at Address A1
MOSI
W/RB
A6
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
Last Address Accessed (A1')
Current Data at Address A1'
MISO
W/RB
A6'
A5'
A4'
A3'
A2'
A1'
A0'
D7'
D6'
D5'
D4'
D3'
D2'
D1'
D0'
Figure 7. Register Write Access
NSS
SCK
t nl
t ch
t nh
t setup t hold
t cl
New Address (A1)
MOSI
W/RB
A6
A5
A4
A3
A2
A1
A0
X
Last Address Accessed (A1')
Current Data at Address A1'
MISO
W/RB
A6'
A5'
A4'
A3'
A2'
A1'
A0'
D7'
D6'
D5'
D4'
D3'
D2'
D1'
D0'
Figure 8. Register Read Access
Similarly, the configuration registers of the SX1230 can be read by issuing an ‘address read-byte’ (see Figure 8) the
corresponding register contents are then transferred over the MISO line. As above, the contents of each subsequent register
can be transferred by holding the NSS input low.
A summary of all of the registers of the SX1230 are given in Table 11, this is followed by detailed descriptions of each of the
registers in Table 12.
SX1230, Revision 2 May 2009
?2008 Semtech Corp.
Page 19
www.semtech.com
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