tm1300 NXP Semiconductors, tm1300 Datasheet - Page 121

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Figure 7-30. EVO frame timing.
Table 7-6. VO_CTL register fields
RESET
SLEEPLESS
CLOCK_SELECT Clock select.
PLL_S
PLL_T
CLKOUT
Field
264
266
283
525
20
Software reset of the EVO.
The recommended software reset procedure is as follows.
• Write the desired VO_CTL state with the RESET bit set to ‘1’.
• Write the desired VO_CTL state word, this time with the RESET bit cleared to ‘0’. Both writes should have
• Finally, enable the newly selected mode by setting VO_ENABLE. This step should be done last, as a separate
After a software reset, 5 VO_CLK clock cycles are required to stabilize the internal circuitry (before enabling EVO).
Note: A hardware reset clears the CLKOUT and SYNC_MASTER bits and puts VO_CLK, VO_IO1, and VO_IO2 in
the input state. This results in a VO_CTL value of 0x32400000. In contrast, a software reset does not change
device registers. So a software reset results in a state as specified by the VO_CTL word value written during the
above-described procedure.
Disable power management.
If SLEEPLESS = 1, power-down of the EVO is prevented during global TM1300 power-down.
00 — Select PLL VCO output as the VO_CLK source.
01 — Select PLL feedback loop divider output as VO_CLK source.
10 — Select PLL input divider output as VO_CLK source.
11 — Select DDS output directly as VO_CLK source, bypassing the PLL altogether. (Hardware reset default.)
PLL input divider division ratio.
A value of k selects division by k +1. The hardware reset default = 1, causing division by 2.
PLL feedback loop divider division ratio.
A value of k selects division by k +1. The hardware reset default = 1, causing division by 2.
Clock output.
• When CLKOUT = 1, the EVO clock generator is enabled, and VO_CLK is an output.
• When CLKOUT = 0, VO_CLK is an input, and EVO clock is provided by the external device. (Hardware reset
1
4
VO_ENABLE set to 0.
transaction.
default.)
Blanking: Field 2 Overlap
Blanking: Field 1 Overlap
Video Image: Field 1
Video Image: Field 2
Blanking: Field 2
Blanking: Field 1
525 Line / 60 Hz
PRODUCT SPECIFICATION
Description
311
313
336
623
624
625
23
1
Blanking: Field 1 Overlap
Blanking: Field 2 Overlap
Video Image: Field 2
Video Image: Field 1
Blanking: Field 2
625 Line / 50 Hz
Blanking: Field 1
Enhanced Video Out
7-17