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I am trying to find in the User manual what the clock speed I am running at. I
have a Super Pro Plus. According to the PCLK_SPI bits in the PCLKSEL0 register
they are set by default to 00 (CCLK/4). But what is this speed? I think the
CCLK is dependent on the PLL clock but I do not know where to find the info I am
looking for.

Basically I have to keep my SPI under 10 MHz for one of my SPI slave devices. I
do not know what to set the PCLK_SPI bits to if I do not know what the CCLK is.
The external crystal is 32kHz, correct?

CCLK is 96 MHz

PCLK is 24 MHz

Ok, thanks. But the only choices for PCLKSEL0 are CCLK, CCLK/2, CCLK/4, and
CCLK/8. CCLK/8 will only give me 96/8= 12MHz. My max for my slave device is
10MHz. How and what do I change to get this down to 10 MHz?

If you change PCLK you change it for all peripherals in the LPC17xx family, a
bad thing in BASIC

But almost all peripherals have pre-scalers of some sort to control the
frequency

in the SPI it's the S0SPCCR

in the 2 SSPs it's the CPSR