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M32C/8A 数据表(PDF) 101 Page - Renesas Technology Corp |
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M32C/8A 数据表(HTML) 101 Page - Renesas Technology Corp |
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101 / 372 page  M32C/8A Group 9. Clock Generation Circuits Rev.1.00 Jul 15, 2007 Page 84 of 352 REJ09B0385-0100 9.4 Clock Output Function The CLKOUT pin outputs fC, f8, or f32. The BCLK clock, which has the same frequency as the CPU clock, can be output from the BCLK pin in microprocessor mode. Table 9.4 lists CLKOUT pin function in microprocessor mode. Table 9.4 CLKOUT Pin Function in Microprocessor Mode −: Can be set to either 0 or 1 NOTES: 1. Change the CM0 register after setting the PRC0 bit in the PRCR register to 1 (write enable). 2. Change registers PM0 and PM1 after setting the PRC1 bit in the PRCR register to 1 (write enable). CM0 Register(1) PM1 Register(2) PM0 Register(2) CLKOUT/BCLK/ALE Pin Function Bits CM01 and CM00 Bits PM15 and PM14 PM07 bit 00b 00b 10b 11b 0 Outputs BCLK 1 Outputs “L” (does not function as P5_3) 01b − Outputs ALE 01b − − Outputs fC 10b − − Outputs f8 11b −− Outputs f32 |
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