mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 25

• Manufacturer Part Number: mrf89xa
• Description: Ultra-low Power, Integrated Ism Band Sub-ghz Transceiver
• Manufacturer: Microchip Technology Inc.

Read Register - To read the value of a Configuration
register, the timing diagram illustrated in Figure 2-13
should be followed by the host microcontroller.
FIGURE 2-13:
© 2010 Microchip Technology Inc.
CSCON
SCK (In)
SDI
SDO (Out)
Note:
(In)
When reading more than one register suc-
cessively, it is not compulsory to toggle
CSCON back high between two read
sequences. The bytes are alternatively
considered as address and value.
HZ
(input)
(In)
start
1
x
READ REGISTER SEQUENCE
rw
2
x
A(4)
3
x
A(3)
Address = A1
4
x
A(2)
5
x
A(1)
6
x
Preliminary
A(0)
7
x
stop
8
x
D(7)
xx
9
D(6)
10
D(5)
11
xx
Current value at
address A1
D(4)
12
D(3)
13
x
MRF89XA
D(2)
x
14
D(1)
15
x x
DS70622B-page 25
16
D(0)
HZ
(input)