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2
2.10.1
Main I
The main I
CRB uses the main I
controllers, while operating at 400 KHz.
2
Figure 3.
I
C Local Serial Bus
2
I
C Local Serial Bus
®
Intel
40mm
Spare IO
Spare 0,1, 2, 3 - from '6651s
Interrupts
/OTEMP - Over Temp
/FALERT - Fan Alert
2
I
C Addresses
0x48 = Temp Sensor LM75-a
0x49 = Temp Sensor LM75-b
0x4B = Fan Crtl MAX6651-a
0x1B = Fan Crtl MAX6651-b
0x50 = EEPROM 24LC16B
0x68 = RTC M41ST84W
®
Intel
IQ80315 I/O Processor Evaluation Platform Board Manual
C Bus Subsystem
2
C bus is primarily used for miscellaneous storage and support functions. The IQ80315
2
C bus for serial EEPROM, real-time clock, temperature sensors, and fan
SDA
SCL
I
2
C Addr
80314
= 0x68
2
I
C Bus: 400 KHz
3.3
V
2
I
C Addr
= 0x4B
/FALERT
(Fan Intr)
2
I
C Addr
= 0x1B
2
I
C Addr
= 0x50
2
I
C Addr
= 0x48
/OTEMP
2
I
C Addr
= 0x49
®
Intel
IQ80315 I/O Processor Evaluation Platform
Figure 3
illustrates the main I
32KHz
SDA
RTC
SCL
STMicro-
electronics*
SQW
Analog
M41ST84W
Buffer
44 Bytes Storage
CR2032
Battery Holder + Battery
Front Case Fan(s)
TAC0
SDA
TAC1
SCL
TAC2
TAC3
TAC3
Addr
Fan Control:
3
12V
Maxim* 6651
2
1
OUT
GPIO:3
Spare-0
GPIO:4
Spare-1
Common Clock
Rear Case Fan(s)
TAC0
TAC1
TAC2
TAC3
TAC3
3
12V
2
1
Fan Control:
Maxim* 6651
SDA
SCL
OUT
Addr
GPIO:3
Spare-2
GPIO:4
Spare-3
SDA
A2
Serial 2KByte
A1
SCL
EEPROM
A0
24LC16B
WP
SDA
A2
Temp Sensor
A1
SCL
A0
National* TI-101
Temperature Sensors are Located on
Over Temp Intr
Opposite ends of the Board
A2
Temp Sensor
3.3V
A1
SDA
A0
National* TI-101
SCL
SCL
3
2
I
C - Header 0
Keyed header
2
GND
for debug
SDA
1
SCL
2
I
C - CPLD Mictor* Header (for user
SDA
Applications and System Debugging)
2
C bus components.
Chassis
Speaker
Volume
Control
Audio Alarm
(buzzer)
TAC2
TAC1
3
3
3
2
2
2
1
1
1
12V
½ of N-
Fan Header
MOSFET
Connectors
IRF7301
TAC2
TAC1
3
3
3
2
2
2
1
1
1
12V
Fan Header
½ of N-
Connectors
MOSFET
IRF7301
* Other names and brands may be
claimed as the property of others.
TAC0
TAC
12V
FB/GND
TAC0
TAC
12V
FB/GND
21
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