NAD VISO FIVE Service Manual page 18

I.C PIN DESCRIPTIONS (IC45 : AUDIO DSP : CS494003)
PIN No PIN Name
1 UHS0
2 HUS1
3 INTREQ,ABODY
4 FA1,FSCDIN
5 GPIO20
6 FA0,FSCCLK
7 FHS2,FSCDIO
8 GPIO21
9 FDAT7
10 VDD6
11 VSS6
12 FWR,FDS
13 FRD,FR/W
14 FDAT6
15 FCS
16 FINTREQ
17 FDBCK
18 FDAT5
19 FDAT4
20 VDD7
21 VSS7
22 FDAT3
23 FDBDA
24 FDAT2
25 DBDA
26 DBCK
27 FDAT1
28 TEST
29 FDAT0
30 NV_WE
31 NV_OE
32 NV_CS
33 SD_WE
34 SD_DATA0
35 SD_DATA1
36 SD_DATA2
37 SD_DATA3
38 SD_DATA4
39 SD_DQM0
40 SD_DATA5
41 VSSSD4
42 VDDSD4
43 SD_DATA6
44 SD_DATA7
45 SD_DQM1
46 SD_DATA15
I/O
O DSP C Control Mode Select BIT 0
DSP C Control Mode Select BIT 0
O
Open-drain interrupt-request output
O
Host Address Bit One or SPI Serial Control data input
I
General Purpose output
O
Host parallel Address Bit Zero or Serial Control Port Clock
I
DSP AB Control port mode select bit2
O
General Purpose output
O
DSP AB Bidirectional data bus
I
2.5V Supply Voltage
2.5V Ground
I Host write Strobe or Host data strobe
Host Parallel Output Enable or
O
I DSP AB Bidirectional data bus
Host Parallel Chip Select , Host Serial SPI Chip Select
I
Open-drain interrupt-request output
O
Reserved
I
DSP AB Bidirectional data bus
I
DSP AB Bidirectional data bus
I
2.5V Supply Voltage
2.5V Ground
DSP AB Bidirectional data bus
I
Reserved
I
DSP AB Bidirectional data bus
I
I Debug Data
Debug Clock
I
I DSP AB Bidirectional data bus
Reserved
I
DSP AB Bidirectional data bus
I
SRAM Write Enable
O
SRAM Output Enable
O
SRAM Chip Select
O
SDRAM Write Enable
O
SDRAM Data Bus 0
O
SDRAM Data Bus 1
O
SDRAM Data Bus 2
O
SDRAM Data Bus 3
O
O SDRAM Data Bus 4
SDRAM Data Mask 0
O
O SDRAM Data Bus 5
SDRAM Ground
SDRAM Power Supply
SDRAM Data Bus 6
O
SDRAM Data Bus 7
O
SDRAM Data Mask 1
O
SDRAM Data Bus 15
O
2-6
Function