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Pin No.
Pin Name
23
OPIN3 (-)
24
OPIN3 (+)
25
OPOUT4
26
OPIN4 (-)
27
OPIN4 (+)
28
BIAS
6-9 Head Coil Driver : BD7910FV (X33, IC8)
Pin No.
Pin Name
1
VregIN
2
RegGND
3
RegSEL
4
VG
5
VDD
6
PDGND
7
EFM
8
MUTE
9
NC
10
NC
11
NC
12
V0D2
13
HGND
14
V0D1
15
V0S1
TE
L 13942296513
16
HVDD
17
V0S2
18
RegDRV
19
RegOUT
20
RegNF
6-10 A/D, D/A Converter : AK4550VT(X33, IC10)
Pin No.
Pin Name
1
VCOM
2
AINR
3
AINL
4
VSS
5
VDD
6
DEM0
7
DEM1
8
SDTO
9
SDTI
10
LRCK
11
MCLK
12
SCLK
13
PWAD
14
PWDA
15
AOUTL
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16
AOUTR
.
CIRCUIT DESCRIPTION
I/O
I
Inverted input of CH3 OP-AMP.
I
Not inverted input of CH3 OP-AMP.
O
Output of CH4 OP-AMP.
I
Inverted input of CH4 OP-AMP.
I
Not inverted input of CH4 OP-AMP.
I
Input for reverse voltage (bias).
I/O
I
Regulator Input & Regulator Power Supply
-
Regulator GND
-
Regulator Select Pin
I
Drive Voltage Input for Power MOS
I
Input of Supply Voltage for EFM Signal Source
-
Pre Drive GND
I
EFM Signal Input
-
Mute Control (High : Active)
-
Open
-
GND
-
GND
-
Sync Output
-
H Bridge Section GND
O
Sync Output
O
Source Output
-
H Bridge Section Power Supply
O
Source Output
O
PNP Drive Output for Regulator
O
Regulator Output
-
Regulator Feed Back Pin
I/O
O
Output Pin of Common Voltage
I
Input Pin of Analog R channel
I
Input Pin of Analog L channel
-
GND
-
Analog Power Supply
I
De-emphasis Control Pin
I
De-emphasis Control Pin
O
Audio Serial Data Output Pin
I
Audio Serial Data Input Pin
I
L/R Channel Clock Pin
I
Master Clock Input Pin
I
Audio Serial Data Clock Pin
I
ADC Power Down & Reset Mode Pin
I
DAC Power Down & Reset Mode Pin
O
Output Pin of Analog L channel
O
Output Pin of Analog R channel
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i
RD-HD5MD/HD7
2 9
8
Pin Description
Pin Description
Q Q
3
6 7
1 3
1 5
Pin Name
"L" : Power Down Mode
"L" : Power Down Mode
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
9 9
9 9
17
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