TC1796
System Units (Vol. 1 of 2)
General Purpose I/O Ports and Peripheral I/O Lines
User’s Manual 10-25 V2.0, 2007-07
Ports, V2.0
10.3.3.3 Reserved SWOPT Bits of SCU_SCLIR Register
Depending on the TC1796 device version used in an application, several Port 0 lines
(meaning several SWOPT bits) are reserved and cannot be used for user system
purposes during a HDRST reset operation. Table 10-8 defines the reserved Port 0 lines
(indicated by 0 or 1) as well as the Port 0 lines that can be used by a user program
(indicated by “user”) for software configuration selection (or as GPIO pins) depending on
the specific TC1796 device version.
Table 10-8 Reserved SWOPT Bits in TC1796 Devices
TC1796 Device Version SWOPTx Bits (x = 0-15)
P0.
[15:8]
P0.
[7:6]
P0.5 P0.4 P0.3 P0.
[2:0]
P0.
[15:8]
TC1796 user user user 1 user
1)
1) The P0.[2:0] bits are only used in alternate boot modes (see Page 4-28). If alternate boot modes are not
required or used in an application, P0.[2:0] can also be used for user program software configuration selection
purposes during a hardware reset operation or as GPIO pins.
user
TC1796ED (Emulation device) user 0 or 1
2)
2) 0: Emulation device functionality is not available.
1: Emulation device functionality is fully supported.
1
TC1796-L
(Flash-Not-Available version)
user 11B
3)
3) In Flash-Not-Available devices/sockets with P0.4 = 0, P0.[7:6] are used for test purposes and must always be
set to 11
B
during a hardware reset operation.
0
TC1796ED in TC1796-L socket 11
B
3)
0 or 1
2)
0
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