CMT2157AW
Rev 0.8 | Page 8/31
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2. Pin Descriptions
1
2
3
4
5
6
7
14
13
12
10
9
8
11
LED
VDD
GND
RFO
K7
K6
K5
XTAL
CLK
DATA
K1
K2
K3
K4
Figure 2. CMT2157AW Pin Assignments
Table 6. CMT2157AW Pin Descriptions
Pin Number
Name
I/O
Descriptions
1
LED
O
LED driver, active low
2
VDD
I
Power supply input
3
GND
I
Ground
4
RFO
O
Power amplifier output
5 - 11
K[7:1]
I
Push button 7 to 1
12
DATA
IO
Data pin to access the embedded EEPROM, internally pulled up to VDD
13
CLK
I
Clock pin to access the embedded EEPROM, internally pulled up to VDD
14
XTAL
I
26 MHz single-ended crystal oscillator input or
External 26 MHz reference clock input
