Read Sony PCM-R300 Service Manual online
– 53 –
Pin No
1, 2
3
4 to 8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Pin Name
A8, A9
VDD
A10 to A14
XWE
XCE
XEAN
TST1
XT1O
XT1I
VSS
XRST
CLKO
MINT
ATSY
MCLK
DREF
SBPM
EXCK
SDSI
SDSO
SBSY
PLRF
CCLK
MUTE
MUTM
UNLK
RFCT
SYMN
SELB
PLCK
TST2
RFDT
XCS
SWP
VSS
PIPC
REPB
REDT
TST4
PDO
I/O
O
—
O
O
O
O
I
O
I
—
I
O
O
I
O
O
O
I
I
O
O
O
O
I
O
O
I
O
I
O
I
I
I
I
—
O
O
O
I
O
Function
External RAM address output
Power supply (+5V)
External RAM address output
External RAM write enable signal output
External RAM output enable signal output
Not used
Test pin (Fixed at “L”)
Crystal oscillation circuit 1 output (18 MHz)
Crystal oscillation circuit 1 input (18 MHz)
Ground
Reset input
“L”: Reset
Not used
Control byte (1) bit 1=“L”: Q code decode (Detecting between songs) output, “H”: BCK
clock output by RX-PLL
ATF sync signal input
Not used
SBSY period, duty 50 signal output
Not used
Data transfer clock input from main, mecha control
Serial data input from main, mecha control
Serial data output to main, mecha control
Frame sync signal output for transferring data to main, mecha control
Not used
Not used
Mute input
“H”: Mute Not mute REC monitor sound
Mute monitor
“H”: Indicates muting occurs
RX-PLL lock monitor signal output
“L”: Indicates locking occurs
Playback RF signal control (“L”: Valid, “H”: Invalid) (Fixed at “L”)
Outputs monitor signal for C1 check results corresponding to RF
Test pin (Fixed at “H”)
Not used
Test pin (Fixed at “L”)
Playback RF signal input
Chip select input for data transfer with microprocessor
“L”: Transfer enable (Fixed at “L”)
RF switching pulse
“L”: A track, “H”: B track
Ground
ATF pilot signal/discrimination signal output for record signal
“H”: Pilot signal
REC/PB discrimination signal output
“H”: REC
Record signal output
Test pin (Fixed at “L”)
RX-PLL phase comparator output
5-12. IC PIN FUNCTIONS
• IC304 Digital Signal Processor (CXD2605Q)
•
Abbreviation
PLL: Phase Locked Loop
PLL: Phase Locked Loop
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