FM540 Service Manual
11
XOUT
O
CPU clock output
12
VSS
-
GND
13
XIN
I
CPU clock input
14
VCC
-
+5V
15
NC
I
+5V
16
PTT
I
PTT key
17
RD NC
I
NC
18
NC
I
NC
19
NC
O
NC
20
NC
I/O
NC
21
NC
O
NC
22
S_CS
O
FLASH data output
23
S_SO
I
FLASHdata output
24
NC
O
NC
25
S_SCK
O
FLASH data output
26
PC/TV
O
TX power,receving frequency band voltage tunning
27
S_SI
-
FLASH data output
28
NC
O
NC
29
TXD
O
TXD1 output
30
RXD
I
RXD1 input
31
C_CLK
-
Emulator interface
32
C_BUSY
O
Emulator interface
33
TXD0
O
NC
34
RXD0
I
NC
35
AFCO_1
O
RX/TX audio power amplification control pin
36
NC
O
NC
Page 14 of 99
Summary of Contents for FM540
Page 1: ...FM540 Service Manual FM540 㔤 ሱ䶒 I ...
Page 89: ...FM540Service Manul Figure 2 FM540 01 Top Layer Position Diagram 136 174MHz Page 86 of 99 ...
Page 90: ...FM540Service Manul Figure 3 FM540 01Bottom Layer Position Diagram 136 174MHz Page 87 of 99 ...
Page 101: ...FM540Service Manul Figure 8 FM540KEYTop Layer Position Diagram Page 98 of 99 ...
Page 102: ...FM540Service Manul Figure 9 FM540KEY Bottom Layer Position Diagram Page 99 of 99 ...