TC1796
System Units (Vol. 1 of 2)
General Purpose I/O Ports and Peripheral I/O Lines
User’s Manual 10-1 V2.0, 2007-07
Ports, V2.0
10 General Purpose I/O Ports and Peripheral I/O Lines
The TC1796 has 127 digital General Purpose Input/Output (GPIO) port lines which are
connected to the on-chip peripheral units. They are divided into:
• Four 16-bit GPIO ports (Ports 0, 1, 3, and 4)
• One 14-bit GPIO port (Port 2)
• One 12-bit GPIO port (Port 6)
• One 9-bit GPIO port (Port 9)
• Three 8-bit GPIO ports (Port 5, 7, and 8)
• One 4-bit input only port (Port 10)
Additionally, fourteen dedicated input/output lines without GPIO functionality are
provided. The External Bus Interface (EBU) has its own set of dedicated signal lines.
Figure 10-1 is an overview of the I/O lines with its general port-to-peripheral unit
assignments. Further details are described in the port-specific sections of this chapter.
Figure 10-1 Peripheral/GPIO Lines of the TC1796
MCA05652
Alternate Functions:
TC1796
Port 0
Port 1
Port 2
Port 4
Port 5
Port 3
Port 6
Port 7
Port 8
Port 9
Port 10
MLI0 / SCU
8
GPIO
None
SSC0 / SSC1 /
GPTA
GPTA
GPTA
ASC0 / ASC1 /
MSC0 / MSC1 / MLI0
SSC0 / SSC1 /
MSC0 / MSC1 / CAN
ADC0 / ADC1
MLI1 / GPTA
MSC0 / MSC1 /
GPTA
HWCFG
Data Bus D[31:0]
Address Bus
A[23:0]
Control / Clock
32
External Bus Interface
Dedicated I/O Lines
MSC0 / MSC1
LVDS Outputs
SSC0
24
20
16
16
14
16
16
12
8
8
8
9
4
6
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