Digi NS9750 Bedienungsanleitung PDF herunterladen (Seite 39)

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I2C interface

www.digi.com

       35

C interface

USB Interface

Notes:

 If not using the USB interface, these pins should be pulled down to ground through a 15K ohm

resistor.

 All output drivers for USB meet the standard USB driver specification.

Pin # Signal name

U/D

(mA)

I/O Description

AC15 iic_scl 4 I/O I

C serial clock line. Add a 10K resistor to

VDDA(3.3V) if not used.

AF16 iic_sda 4 I/O I

C serial data line. Add a 10K resistor to

VDDA(3.3V) if not used.

Table 17: I

C interface pinout

Pin # Signal name

U/D

(mA)

I/O Description

AB4 usb_dm I/O USB data -

AC3 usb_dp I/O USB data +

Table 18: USB interface pinout

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 87 88

NS9750B-A1 Datasheet 1
Contents 3
NS9750B-A1 Datasheet 03/2006 4
NS9750B-A1 Features 5
2        6
System-level interfaces 8
System configuration 9
Table 2: PLL ND[4:0] 10
Pin name Configuration bits 10
General Purpose ID register 11
System boot 12
System Clock 13
NS9750B-A1 14
USB clock 15
System Memory interface 16
Pin # Signal Name 17
I/O Description 17
Name I/O Description 20
Ethernet interface 22
Clock generation/system pins 23
PCI interface 24
PCI/CardBus signals 26
24        28
GPIO MUX 29
Pin # Signal name 30
Table 12: GPIO MUX pinout 30
USB Power 35
Controller 35
CLSTN[0] 36
MLSTN[0] 36
CUSTN[0] 37
RED[0] 38
GREEN[0], BLUE[0] 38
C interface 39
USB Interface 39
Reserved pins 41
Address and register maps 42
BBus peripheral address map 43
Electrical characteristics 44
Maximum power dissipation 45
Typical power dissipation 45
DC electrical characteristics 46
USB DC electrical outputs 47
44        48
Power sequencing 49
Memory timing 50
SDRAM burst read (16-bit) 51
SDRAM burst write (16-bit) 52
SDRAM burst read (32-bit) 52
SDRAM burst write (32-bit) 53
SDRAM load mode 54
SDRAM refresh mode 54
Clock enable timing 54
SRAM timing 55
52        56
 WTWR = from 0 to 15 60
       57 61
58        62
Ethernet timing 63
Ethernet MII timing 64
Ethernet RMII timing 64
PCI timing 65
Internal PCI arbiter timing 66
64        68
C timing 69
LCD timing 70
68        72
LCD output timing 73
SPI timing 74
72        76
IEEE 1284 timing 77
USB timing 78
USB full speed load 79
USB low speed load 79
       80
JTAG timing 81
Clock timing 82
       79 83
Packaging 84
NS9750B-A1, 388 BGA 86
Product specifications 87

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