82801CA Datasheet, PDF (39/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

Signal Description
2.1
Hub Interface to Host Controller
Table 2-1. Hub Interface Signals
Name
HI[11:0]
HI_STBF
HI_STBS
HICOMP
HITERM
Type
I/O
I/O
I/O
I/O
I
Description
Hub Interface Signals
Hub Interface Strobe Complement: First strobe signal used to transmit and
receive data through the hub interface.
Hub Interface Strobe: Second strobe signal used to transmit and receive data
through the hub interface.
Hub Interface Compensation: Used for hub interface buffer compensation.
Hub Interface Termination: Analog input used to control the voltage swing and
impedance strength of hub interface pins. The expected voltage is 700 mv.
NOTE: Refer to the platform design guide for resistor values and routing
guidelines.
2.2
Link to LAN Connect
Table 2-2. LAN Connect Interface Signals
Name
Type
Description
LAN_CLK
LAN_RXD[2:0]
LAN_TXD[2:0]
LAN_RSTSYNC
I
LAN I/F Clock: Driven by the LAN Connect component. Frequency range is 5 to
50 MHz.
Received Data: The LAN Connect component uses these signals to transfer
I
data and control information to the integrated LAN Controller. These signals
have integrated weak pull-up resistors.
O
Transmit Data: The integrated LAN Controller uses these signals to transfer
data and control information to the LAN Connect component.
O
LAN Reset/Sync: The LAN Connect component’s Reset and Sync signals are
multiplexed onto this pin.
2.3
EEPROM Interface
Table 2-3. EEPROM Interface Signals
Name
Type
Description
EE_SHCLK
EE_DIN
EE_DOUT
EE_CS
O
EEPROM Shift Clock: Serial shift clock output to the EEPROM.
I
EEPROM Data In: Transfers data from the EEPROM to the ICH3. This signal
has an integrated pull-up resistor.
O
EEPROM Data Out: Transfers data from the ICH3 to the EEPROM.
O
EEPROM Chip Select: Chip select signal to the EEPROM.
Intel^® 82801CA ICH3-S Datasheet
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