Datasheet

ADuC7033
Rev. B | Page 118 of 140
Serial Test Interface Data 2 Register
Name: STIDAT1
Address: 0xFFFF0894
Default
Va lu e:
0x0000
Access: Read/write
Function: The STIDAT2 MMR is a 16-bit register that holds
the fifth and sixth data bytes that are to be trans-
mitted on the STI pin when the STI port is enabled.
The fifth byte to be transmitted occupies Bits[7:0]
and the sixth byte occupies Bits[15:8].
Serial Test Interface Control Register
Name: STICON
Address: 0xFFFF0884
Default
Va lu e:
0x0000
Access: Read/write access, write protected by two key
registers (STIKEY0 and STIKEY1). A write access
to STICON is completed correctly only when the
following triple write sequence is followed:
1. STIKEY0 MMR is written with 0x0007.
2. STICON is written.
3. The sequence is completed by writing 0x00B9
to STIKEY1.
Function: The STI control MMR is a 16-bit register that
configures the mode of operation of the serial test
interface.
Note: GPIO_13 must be configured for STI operation in
GP2CON for STI communications.