PCM-9562 User Manual
14
I
2
C (Inter-Integrated Circuit) is a multi-master serial computer bus invented by Philips
that is used to attach low-speed peripherals to a motherboard, embedded system, or
cellphone. The name is pronounced eye-squared-see or eye-two-see.
I
2
C uses only two bidirectional open-drain lines, Serial Data (SDA) and Serial Clock
(SCL), pulled up with resistors. Typical voltages used are +5 V or +3.3 V although
systems with other, higher or lower, voltages are permitted.
The I
2
C reference design has a 7-bit address space with 16 reserved addresses, so
a maximum of 112 nodes can communicate on the same bus.
COM port connector (CN39, CN40, CN41, CN42 and CN43)
COM is the original, yet still common, name of the serial port interface on IBM PC-
compatible computers.PCM-9562 can support 4 RS-232 ports (CN39, CN40, CN41,
CN43) and 2 RS-422/485 (CN42). COM6 (CN43) is photo isolated and complies with
UL60601.
-5 V and -12 V Connector (CN44)
CN44 is a wafer type 3-pin connector for -5 V and -12 V.
SPI Flash socket (CN45)
CN45 is a socket for BIOS flash. PCM-9562 uses a 16Mbit capacity flash for BIOS.
SATA Power Connecter (CN46)
CN46 is SATA Power Connecter
2.3
Mechanical
2.3.1
Jumper and Connector Location
CN5
CN2
CN4
FAN2
CN14
PCI1
CN18
CN9
CN8
CN6
CN36
GPIO1/2
CN10
CN11
CN11
CN44
FAN1
CN16
CN32/3/34
CN13
CN23
CN22
CN24
CN41
JP4
CN42
CN39
CN15
CN26
CN20/21/28/29
CN43
CN17
JP1
JP2
JP3
CN40
JP7
CN46
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