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Yamaha A-S2100 Service Manual page 45

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Pin
Port Name
No.
1
P9_6/ANEX1/SOUT4
2
P9_5/ANEX0/CLK4
3
P9_4/DA1/TB4IN/PWM1
4
P9_3/DA0/TB3IN/PWM0
5
P9_2/TB2IN/PMC0/SOUT3
6
P9_1/TB1IN/PMC1/SIN3
7
P9_0/TB0IN/CLK3
8
BYTE
9
CNVss
10 P8_7/XCIN
11 P8_6/XCOUT
12 nRESET
13 Xout
14 Vss
15 Xin
16 Vcc1
17 P8_5/nNMI/nSD/CEC
* Nch Open Drain
18 P8_4/nINT2/ZP
19 P8_3/nINT1
20 P8_2/nINT0
21 P8_1/TA4IN/nU/nCTS5/nRTS5
22 P8_0/TA4OUT/U/RXD5/SCL5
23 P7_7/TA3IN/CLK5
24 P7_6/TA3OUT/TXD5/SDA5
25 P7_5/TA2IN/nW
26 P7_4/TA2OUT/W
27 P7_3/nCTS2/nRTS2/TA1IN/nV
28 P7_2/CLK2/TA1OUT/V
29 P7_1/RXD2/SCL2/SCLMM/TA0IN/ SYS_RXD
* Nch Open Drain
TB5IN
30 P7_0/TXD2/SDA2/SDAMM/
* Nch Open Drain
TA0OUT
31 P6_7/TXD1/SDA1
32 P6_6/RXD1/SCL1
33 P6_5/CLK1
34 P6_4/nCTS1/nRTS1/nCTS0/
CLKS1
35 P6_3/TXD0/SDA0
36 P6_2/RXD0/SCL0
37 P6_1/CLK0
38 P6_0/RTCOUT/nCTS0/nRTS0
I/O
Function Name
(P.C.B.)
RY_SPA
O
O
RY_SPB
O
O
PSVA2
TMR
O
DMRCON
DA
O
PSVA1
TMR
O
NC
O
O
NC
O
O
BYTE
[MCU]
CNVss
[MCU]
NC
O
O
NC
O
O
N_RST
[MCU]
XOUT
[MCU]
VSS
[MCU]
XIN
[MCU]
VCC1
[MCU]
N_NMI
[MCU]
MCU
MCU PullUp because of being unused
REM_REAR
IRQ
IRQ
NC
O
O
REM
IRQ
IRQ
EV_RCOM
O
O
EV_RTRE
O
O
EV_CK
SO
O
EV_DT
SO
O
EV_RBAS
O
O
EV_LCOM
O
O
EV_LTRE
O
O
EV_LBAS
O
O
SI
IRQ
SYS_TXD
SO
O
WR_MOSI
SO
SO
[MCU] Rx when writing Flash
WR_MISO
SI
SI
[MCU] Tx when writing Flash
WR_CK
SO
SO
[MCU] Clock when writing Flash
WR_BUSY
O
O
[MCU] BUSY output when writing Flash
NC
O
O
NC
I
O
BAL_PLTY
I
O
PWR_MGT_DET
I
O
Detail of Function
O
Speaker relay A control
O
Speaker relay B control
O
Power amplifier power voltage protection
O
Meter Light Dimmer Level Control
Makes the light intensity of the meter LED variable by using the DA function
Provides precisely variable DIMMER using the mobile terminal application
O
Power amplifier power voltage protection
O
O
Connected to Vss when in single chip mode
(External data bus width changed: 16 bit)
Low: Processor mode selected, single chip mode
Hi:
To Flash included boot mode
Boot mode: P5_5=L, CNVSS=H, P5_0=H
O
O
Reset input
Main clock 20MHz output
D_GND
Main clock 20MHz input
+5M
O
Remote control Rear IR input
O
O
Remove control IR input
O
Electronic volume NJU72321 Enable output / Rch#1 Common
O
Electronic volume NJU72321 Enable output / Rch#2 Treble
O
Electronic volume NJU72321 Clock output
O
Electronic volume NJU72321 Data output
O
Electronic volume NJU72321 Enable output / Rch #3 Bass
O
Electronic volume NJU72321 Enable output / Lch #1 Common
O
Electronic volume NJU72321 Enable output / Lch #2 Treble
O
Electronic volume NJU72321 Enable output / Lch #3 Bass
I
Y Link RXD (Receive)
O
Y Link TXD (Transmit)
O
For simple emulation
O
For simple emulation
O
For simple emulation
O
For simple emulation
O
O
O
BAL Polarity SW Hi/Low detect
Hi=INV., Low=NORMAL
O
Power management On/Off select SW detect
Hi=Power management On
A-S2100
45

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