XC161 Datasheet, PDF (239/419 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC161 Derivatives
Peripheral Units (Vol. 2 of 2)
IIC-Bus Module
20.6
Interfaces of the IIC-Bus Module
In the XC161, the IIC-Bus Module is connected to IO ports and other internal modules
according to Figure 20-7.
The input/output lines of the module are connected to pins of Ports P9. The 2 interrupt
request lines are connected to the Interrupt Control Block. Please note that two of the
thee possible interrupt sources in the IIC-Bus Module or ORed together onto the request
line IIC_DIRQ (see Section 20.4).
Clock control and emulation control of the IIC-Bus Module is handled by the System
Control Unit, SCU.
System
Control
Unit (SCU)
f_IIC
IICDIS
Interrupt
Control
Block
IIC_DIRQ
IIC_PEIRQ
IIC-Bus
Module
SDA_OUT [2:0]
SCL_OUT [2:0]
SDA_IN [2:0]
SCL_IN [2:0]
Port P9
Control
Figure 20-7 IIC-Bus Module IO Interface
P9.0/SDA0
P9.1/SCL0
P9.2/SDA1
P9.3/SCL1
P9.4/SDA2
P9.5/SCL2
MCA05469
User’s Manual
IIC_X, V2.0
20-21
V2.2, 2004-01