Tmode Settings - Texas Instruments OMAP5910 Technical Reference Manual

System Test Enable (ST_EN)
Free Running Mode After Breakpoint (FREE)
Test Mode Select (TMODE)
Table 7–72. TMODE Settings
This bit (15) must be set to 1 to permit other system test registers bits to be set.
-
0: Normal mode
-
1: System test enabled
Value after reset is low.
This bit (14) is used to determine the state of the I
point is encountered in the HLL debugger. This bit can be set independently
of the ST_EN value.
FREE = 0: Stops immediately if SCL is low and keeps driving SCL low whether
2
I C is master transmitter/receiver. If SCL is high, I
low and then stops. If the I
receiving completes.
2
FREE = 1: The I C runs free.
-
0: Stop mode (on breakpoint condition)
-
1: Free-running mode
Value after reset is low.
In normal functional mode (ST_EN = 0), these bits (13-12) are don't care. They
read always as 00 and a write is ignored.
In system test mode (ST_EN = 1), these bits can be set according to the follow-
ing table to permit various system tests.
TMODE Mode
00 Functional mode (default)
01 Reserved
10 Test of SCL counters (SCLL, SCLH, PSC)
11 Loop back mode select + SDA/SCL IO mode select
Inter-Integrated Circuit Controller
2
2
C waits until SCL becomes
2
C is a slave, it stops when the transmission/
MPU Public Peripherals
C controller when a break-
7-85