Marantz SR7400 Service Manual page 30

IC19 : CS4900X
Pin
I/O Function Description
No.
1 I/O UHS0, GPIO18 Mode Select Bit 0, General Purpose I/O
2 I/O UHS1, GPIO19 Mode Select Bit 1, General Purpose I/O
3 INTREQ Control Port Interrupt Request
4 I FA1, FSCDIN Host Address Bit One or SPI Serial Control Data Input
5 I/O GPIO20 General Purpose I/O
6 I FA0, FSCCLK Host Parallel Address Bit Zero or Serial Control Port Clock
7 I/O FHS2, Mode Select Bit 2 or Serial Control Port Data Input and
FSCDIO, Output, Parallel Port Type Select
FSCDOUT
8 I/O GPIO21 General Purpose I/O
9 FDAT7 DSP AB Bidirectional Data Bus
10 VDD6 2.5V Supply Voltage
11 VSS6 2.5V Ground
12 FHS0, FWR, Mode Select Bit 0 or Host Write Strobe or Host Data Strobe
FDS
13 O FHS1, FRD, Mode Select Bit 1 or Host Parallel Output Enable or Host
FR/W Parallel R/W
14 FDAT6 DSP AB Bidirectional Data Bus
15 I FCS Host Parallel Chip Select, Host Serial SPI Chip Select
16 O FINTREQ Control Port Interrupt Request
17 FDBCK Reserved
18 FDAT5 DSP AB Bidirectional Data Bus
19 FDAT4 DSP AB Bidirectional Data Bus
20 VDD7 2.5V Supply Voltage
21 VSS7 2.5V Ground
22 FDAT3 DSP AB Bidirectional Data Bus
23 FDBDA Reserved
24 FDAT2 DSP AB Bidirectional Data Bus
25 DBDA Debug Data
26 DBCK Debug Clock
27 FDAT1 DSP AB Bidirectional Data Bus
28 TEST Reserved
29 FDAT0 DSP AB Bidirectional Data Bus
30 I/O NV_WE, SRAM Write Enable, General Purpose I/O
GPIO16
31 I/O NV_OE, SRAM Output Enable, General Purpose I/O
GPIO15
32 I/O NV_CS, SRAM Chip Select, General Purpose I/O
GPIO14
33 SD_WE SDRAM Write Enable
34 SD_DATA0, SDRAM Data Bus, SRAM External Data Bus
EXTD0
35 SD_DATA1, SDRAM Data Bus, SRAM External Data Bus
EXTD1
36 SD_DATA2, SDRAM Data Bus, SRAM External Data Bus
EXTD2
37 SD_DATA3, SDRAM Data Bus, SRAM External Data Bus
EXTD3
38 SD_DATA4, SDRAM Data Bus, SRAM External Data Bus
EXTD4
39 SD_DQM0 SDRAM Data Mask 2
40 SD_DATA5, SDRAM Data Bus, SRAM External Data Bus
EXTD5
41 VSSSD4 3.3V SDRAM/SRAM/EPROM Interface Ground
42 VDDSD4 3.3V SDRAM/SRAM/EPROM Interface Supply
43 SD_DATA6, SDRAM Data Bus, SRAM External Data Bus
EXTD6
44 SD_DATA7, SDRAM Data Bus, SRAM External Data Bus
EXTD7
45 SD_DQM1 SDRAM Data Mask 1
46 SD_DATA15, SDRAM Data Bus, SRAM External Address Bus
EXTA18
47 SD_DATA14, SDRAM Data Bus, SRAM External Address Bus
EXTA17
48 NC5 No Connect
49 SD_DATA13, SDRAM Data Bus, SRAM External Address Bus
EXTA16
50 VSSSD3 3.3V SDRAM/SRAM/EPROM Interface Ground
51 VDDSD3 3.3V SDRAM/SRAM/EPROM Interface Supply
52 SD_DATA12, SDRAM Data Bus, SRAM External Address Bus
EXTA15
Compressed
Audio
Interface
Frame
Programmable
Shifter
Digital Multistandard
Audio
Audio Decoder
Interface
Input
DSP AB Buffer
RAM
Parallel or Serial
PLL Clock
Host Interface
Manager
44
SAI 0
SAI 1
SAI 3
SAI 2
DSP C
32-Bit DSP
DSP
RAM
Debug Port
53 SD_DATA11, SDRAM Data Bus, SRAM External Address Bus
EXTA14
54 SD_DATA10, SDRAM Data Bus, SRAM External Address Bus
EXTA13
55 SD_DATA9, SDRAM Data Bus, SRAM External Address Bus
EXTA12
56 SD_DATA8, SDRAM Data Bus, SRAM External Address Bus
EXTA11
57 VSSSD2 3.3V SDRAM/SRAM/EPROM Interface Ground
58 VDDSD2 3.3V SDRAM/SRAM/EPROM Interface Supply
59 O SD_CLK_OUT SDRAM Clock Output
60 SD_ADDR9, SDRAM Address Bus, SRAM External Address Bus
EXTA9
61 I SD_CLK_IN SDRAM Re-timing Clock Input
62 SD_ADDR8, SDRAM Address Bus, SRAM External Address Bus
EXTA8
63 SD_ADDR7, SDRAM Address Bus, SRAM External Address Bus
EXTA7
64 SD_CLK_EN SDRAM Clock Enable
65 SD_ADDR6, SDRAM Address Bus, SRAM External Address Bus
EXTA6
66 SD_ADDR5, SDRAM Address Bus, SRAM External Address Bus
EXTA5
67 SD_ADDR4, SDRAM Address Bus, SRAM External Address Bus
EXTA4
68 SD_CS SDRAM Chip Select
69 VSSSD1 3.3V SDRAM/SRAM/EPROM Interface Ground
70 VDDSD1 3.3V SDRAM/SRAM/EPROM Interface Supply
71 SD_BA, SDRAM Bank Address Select, SRAM External Address Bus
EXTA19
72 SD_ADDR10, SDRAM Address Bus, SRAM External Address Bus
EXTA10
73 SD_ADDR0, SDRAM Address Bus, SRAM External Address Bus
EXTA0
74 SD_ADDR1, SDRAM Address Bus, SRAM External Address Bus
EXTA1
75 SD_ADDR2, SDRAM Address Bus, SRAM External Address Bus
EXTA2
76 SD_ADDR3, SDRAM Address Bus, SRAM External Address Bus
EXTA3
77 SD_RAS SDRAM Row Address Strobe
78 SD_CAS SDRAM Column Address Strobe
79 I/O SDATAN3, PCM Audio Input Data, General Purpose I/O
GPIO27
80 I/O SDATAN2, PCM Audio Input Data, General Purpose I/O
GPIO26
81 I/O SDATAN1, PCM Audio Input Data, General Purpose I/O
GPIO25
82 I/O SDATAN0, PCM Audio Input Data, General Purpose I/O
GPIO24
83 NC4 No Connect
84 NC3 No Connect
85 I/O LRCLKN, PCM Audio Input Sample Rate Clock, General Purpose I/O
GPIO23
86 I/O SCLKN, PCM Audio Input Bit Clock, General Purpose I/O
GPIO22
87 O LRCLK1 Audio Output Sample Rate Clock
88 NC2 No Connect
89 NC1 No Connect
90 VDD1 2.5V Supply Voltage
91 VSS1 2.5V Ground
92 I/O AUDATA7, Digital Audio Output 7, S/PDIF Transmitter, General Purpose
XMT958B, I/O
GPIO31
93 I/O AUDATA6, Digital Audio Output 6, General Purpose I/O
GPIO30
94 I/O AUDATA5, Digital Audio Output 5, General Purpose I/O
GPIO29
95 I/O HDATA7, DSP C Bidirectional Data Bus, General Purpose I/O
GPIO7
96 I/O HDATA6, DSP C Bidirectional Data Bus, General Purpose I/O
GPIO6
97 I/O HDATA5, DSP C Bidirectional Data Bus, General Purpose I/O
GPIO5
98 O SCLK1 Audio Output Bit Clock
Serial
External Memory
Audio
Interface
Interface
Digital
DAO 0
Audio
Interface DAO 1
GPIO and I/O
DSP
Controller
ROM
Parallel or Serial
Host Interface