我现在使用stm32跟atm91sam7x256的can无法连起来，stm32跟stm32可以连，7x256跟7x256可以连
STM32 时钟配置（8M晶振）：
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
STM32 CAN速率配置（500k）：
CAN_InitStructure.CAN_SJW = CAN_SJW_4tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_6tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_6tq;
CAN_InitStructure.CAN_Prescaler = 4;
7X256 时钟配置（18.432M晶振）
///////////////////////////////////////////////////////////////////////////
// Init PMC Step 2.
// Set PLL to 96MHz (96,109MHz) and UDP Clock to 48MHz
// PLL Startup time depends on PLL RC filter: worst case is choosen
// UDP Clock (48,058MHz) is compliant with the Universal Serial Bus
// Specification (+/- 0.25% for full speed)
///////////////////////////////////////////////////////////////////////////
AT91C_BASE_PMC->PMC_PLLR = AT91C_CKGR_USBDIV_1 |
(16 << 8) |
(AT91C_CKGR_MUL & (72 << 16)) |
(AT91C_CKGR_DIV & 14);
// Wait for PLL stabilization
while( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK) );
// Wait until the master clock is established for the case we already
// turn on the PLL
while( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) );
///////////////////////////////////////////////////////////////////////////
// Init PMC Step 3.
// Selection of Master Clock MCK equal to (Processor Clock PCK) PLL/2=48MHz
// The PMC_MCKR register must not be programmed in a single write operation
// (see. Product Errata Sheet)
///////////////////////////////////////////////////////////////////////////
AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
// Wait until the master clock is established
while( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) );
AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK;
7X256 CAN速率配置（500k）：
//AT91F_CAN_CfgBaudrateReg(AT91C_BASE_CAN, 0x00053255);
上面这行是照例程中的设置，但与手册中的数据不符
AT91F_CAN_CfgBaudrateReg(AT91C_BASE_CAN, 0x00053045);
目前的问题应该是两者之间速率不匹配导致无法通信，由于没有标准的can设备，不知道哪个是正确的配置，请大家帮我看看是哪的问题，谢谢！
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