Denon AVR-S510BT, Service Manual

Page: 98 / 124

98
42 BA1 O External SDRAM Bank selector 1 External program address bus [14]
43 LDQM O SDRAM Lower byte data mask External program address bus [15]
44 UDQM O SDRAM Upper byte data mask External program address bus [16]
45 SDCSN O SDRAM Chip select
46 VDD12 P Digital power supply (1.2V)
47 VSS12 P Digital Ground
48 CKE O SDRAM clock enable
49 RASN O SDRAM RAS
50 IOVDD33 P I/O Power supply (3.3V)
51 IOVSS33 P I/O Ground
52 SDCLK O SDRAM clock
53 CASN O SDRAM CAS
54 WEN O SDRAM WEN
55 EAD17 B External memory address[17] General Purpose IO 37
56 EAD18 B External memory address[18] General Purpose IO 38
57 EAD19 B External memory address[19] General Purpose IO 39
58 EAD20 B External memory address[20]
General Purpose IO 40
Boo
ti ng Mode
59 EWEN B External memory WEN General Purpose IO 41
60 EOEN B External memory OEN General Purpose IO 42
61 ECSN O External memory CSN
62 GP03 B General Purpose IO 03 External Clock (16.9344MHz)
63 GP04 B General Purpose IO 04 SPI0 CS
64 GP05 B General Purpose IO 05 SPI0 CK
65 GP06 B General Purpose IO 06 SPI0 MISO
66 GP07 B General Purpose IO 07 SPI0 MOSI
67 GP08 B General Purpose IO 08 HUART0 DI
68 GP09 B General Purpose IO 09 HUART0 DO
69 GP10 B General Purpose IO 10
HUART0 RTS
External Interrupt 11
70 GP11 B General Purpose IO 11
HUART0 CTS
External Interrupt 12
71 GP12 B General Purpose IO 12
Chip Select 1
When GP12 is used for CS1, the external
pull-up resistor (48 k
Ω
) has to be connected
with this pin
72 GP13 B General Purpose IO 13
UART0 RX Data
External Interrupt 8
73 GP14 B General Purpose IO 14
UART0 TX Data
External Interrupt 9
74 GP15 B General Purpose IO 15
UART1 RX Data
I2C SCL
75 GP16 B General Purpose IO 16
UART1 TX Data
I2C SDA
76 GP17 B General Purpose IO 17 SPI1 CS
77 GP18 B General Purpose IO 18 SPI1 CK