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MRF89XA
TABLE 2-1:
PIN DESCRIPTIONS
Pin
Number
1
2
Pin Name
TEST5
TEST1
Pin Type
Digital I/O
Digital I/O
Description
Test Pin. Connected to Ground during normal operation.
Test Pin. Connected to Ground during normal operation.
3
VCORS
Analog Output Regulated voltage supply of the VCO (0.85V).
4
5
6
7
8
9
10
11
12
13
VCOTN
VCOTP
PLLN
PLLP
TEST6
TEST7
OSC1
OSC2
TEST0
TEST8
Analog I/O
Analog I/O
Analog I/O
Analog I/O
Digital I/O
Digital I/O
Analog Input
Analog Input
Digital Input
Digital I/O
VCO tank.
VCO tank.
PLL loop filter.
PLL loop filter.
Test Pin. Connected to Ground during normal operation.
Test Pin. Connected to Ground during normal operation.
Crystal connection.
Crystal connection.
Test Pin. Connected to Ground during normal operation.
Test Pin. Allow pin to float; do not connect signal during normal
operation.
14
15
CSCON
CSDAT
Digital Input
Digital Input
SPI Configure Chip Select.
SPI Data Chip Select.
16
SDO
Digital Output Serial data output interface from MRF89XA.
17
18
SDI
SCK
Digital Input
Digital Input
Serial data input interface to MRF89XA.
Serial clock interface.
19
CLKOUT
Digital Output Clock output. Output clock at reference frequency divided by a pro-
grammable factor. Refer to the Clock Output Control Register
( Register 2-28 ) for more information.
20
DATA
Digital I/O
NRZ data input and output (Continuous mode).
21
22
23
IRQ0
IRQ1
PLOCK
Digital Output Interrupt request output.
Digital Output Interrupt request output.
Digital Output PLL lock detection output. Refer to the FIFO Transmit PLL and RSSI
Interrupt Request Configuration Register ( Register 2-15 ) for more
information.
24
25
26
TEST2
TEST3
V DD
Digital I/O
Digital I/O
Power
Test Pin. Connected to Ground during normal operation.
Test Pin. Connected to Ground during normal operation.
Supply voltage.
27
28
29
AVRS
DVRS
PARS
Analog Output Regulated supply of the analog circuitry (1.0V).
Analog Output Regulated supply of the digital circuitry (1.0V).
Analog Output Regulated supply of the PA (1.8V).
30
31
32
33
TEST4
RFIO
NC
Vss
Digital I/O
Analog I/O
—
Ground
Test Pin. Connected to Ground during normal operation.
RF input/output (for more information, see Section 2.3, RFIO Pin ).
No Connection. Connected to Ground during normal operation.
Exposed Pad. Connected to Ground during normal operation.
? 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 13
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