Fac Registers; Fac Interrupt - Texas Instruments OMAP5910 Technical Reference Manual

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Frame Adjustment Counter

7.16.4 FAC Clocks and Reset

7.16.5 Software Interface

Table 7–146. FAC Registers

Frame adjustment reference count

Frame start count

Control and configuration

Frame synchronization counter

Frame start counter

The FAC generates 1 interrupt, FAC_IRQ (in halt mode when the FARC value

is met), connected to the MPU level 2 interrupt handler, line 0 (level-sensitive)

The FAC works with a clock (PCLK), which is provided by the ULPD from a

request generated by the USB function (DS_WAKE_REQ_ON).

The DS_WAKE_REQ_ON request does not wake-up the system itself.

The ULPD module uses this request to generate an interrupt (ULPD_nIrq) to

the MPU, which wakes up the system via its wake-up request (WKUP_REQ).

Once the system is awakened (12-MHz provided to the MPU), the MPU

programmable peripheral clock (PERCLK) is used as the source clock for the

FAC clock (for more detail, see Chapter 15, Clock Generation and System

Reset Management).

The MPU TIPB reset (MPU_PER_RST) resets the FAC.

Table 7–146 lists the FAC registers. Table 7–147 through Table 7–150

describe the register bits.

The FAC module is a word16 module with 32-bit aligned addresses.