Yamaha neoHD YMC-700, Руководство по обслуживанию

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51
YMC-700/YMC-500
YMC-70
0/YMC-50
0
Asynchronous memory control
Asynchronous memory control
JTAG port
SPI port
Pin
No.
Port
Name
Function Name I/O Detail of Function
158 AMS3
– O Banks select
159 AMS2
160 AMS1
161 AMS0
162 ARDY – I
hardware ready control
(This pin should be pulled
HIGH if not used.)
154 AOE – O Output enable
153 ARE – O Read enable
152 AWE – O Write enable
Pin
No.
Port
Name
Function Name I/O Detail of Function
167 SRAS – O Row address strobe
166 SCAS – O Column address strobe
165 SWE – O Write enable
173 SCKE – O Clock enable
169 CLKOUT – O Clock output
164 SA10 – O A10 pin
172 SMS – O Bank select
Pin
No.
Port
Name
Function Name I/O Detail of Function
94 TCK – I JTAG clock
87 TDO – O JTAG serial data out
86 TDI – I JTAG serial data in
85 TMS – I JTAG mode select
84 TRST – I
JTAG reset
(This pin is should be pulled
LOW if JTAG is not used.)
83 EMU – O Emulation output
Pin
No.
Port
Name
Function Name I/O Detail of Function
55 MOSI – I/O Master out slave in
54 MISO – I/O
Master in slave out
(This pin is should be pulled
HIGH through a 4.7 k-ohms
resistor if booting via the SPI
port.)
53 SCK – I/O SPI clock
Real-time clock
Clock
Mode controls
Voltage regulator
Pin
No.
Port
Name
Function Name I/O Detail of Function
17 RTXI – O RTC crystal output
16 RTXO – I
RTC crystal input (This pin
should be pulled LOW when
not used.)
Pin
No.
Port
Name
Function Name I/O Detail of Function
10 CLKIN – I
Clock/Crystal input
(This pin needs to be at a
level or clocking.)
11 XTAL – O Crystal output
Pin
No.
Port
Name
Function
Name
I/O Detail of Function
13 RESET – I
Reset
(This pin is always active
during core power-on.)
14 NMI – I
Nonmaskable interrupt
(This pin should be pulled
LOW when not used.)
95 BMODE1 –
I
Boot mode strap
(These pins must be pulled
to the state required for the
desired boot mode.)
96 BMODE0 –
Pin
No.
Port
Name
Function Name I/O Detail of Function
4 VROUT1 –
O External FET drive
5 VROUT0 –
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