IMO freq超出规格，如何自动修剪？

我正在使用一种产品（我们称之为键盘），它使用CY8C2664作为它的MCU，并通过RS485与另一主机设备通信。我们在现场与键盘和主机设备之间的通信存在问题，并确定键盘发射机的波特率为3.5%。MCU的主要时钟源是IMO。我检查了UART的时钟分频器设置，发现它们是基于24MHz IMO的期望而正确设置的。然后，用O型范围直接测量时钟速率，并基于我的测量值和我计算的除法器设置。艾德说，IMO实际运行在23.17MHz，误差为3.5%。PSoC技术参考手册在PG109上表示IMO将在2.5%的公差范围内，因此MCU看起来运行不正常。
现在看来，唯一的选择是尝试通过IMOOTR来调整IMO修剪。然而，我们早在0543就有了MCU日期代码的字段中的许多键盘。0543部分具有23.75兆赫的IMO FRQ，并且没有波特率问题。我们遇到的设备的日期是1043。这就是我的问题…我们在这个领域有几千个设备，那么我们怎样才能以简单、方便的方式定制每个设备呢？有没有一个程序员POD或软件会自动为我修剪IMO？
谢谢。



     以下为原文
  I am working with a product (lets call it a keypad) that uses the CY8C27643 as it's MCU and communicates with another host device over RS485.  We have had problems in the field with communications between the keypad and the host device and determined that the baud rate of the keypad transmitter was off by ~3.5%.  The primary clock source for the MCU is the IMO.  I checked the clock divider settings for the UART and found that they were set correctly based on the expectation of a 24MHz IMO.  I then measured the clock rate directly with an o-scope and based on my measurements and the divider settings I calculated that the IMO is actually running at 23.17MHz, an error of 3.5%.  The PSOC technical ref manual states on pg109 that the IMO will be within 2.5% tolerance, so the MCU appears to be operating out of spec.
     
    It looks like the only option right now is to try to adjust the IMO trim via IMO_TR.  However we have many keypads in the field that have MCU date codes as early as 0543.  The 0543 parts have an IMO freq of 23.75MHz and do not have baud rate problems.  The date of the device we are experiencing problems with is 1043.  So heres my question..... we have several thousand devices in the field, so how can we custom trim each device in a simple, expedient manner?  Is there a programmer pod or software that will auto trim the IMO for me?
     
    Thanks.