Cypress manual References, CY8CTST120, CY8CTMG120, CY8CTMA120

CY8CTST120, CY8CTMG120, CY8CTMA120

and A, 0xf8 ;clear the clock bits (briefly chg the cpu_clk to 3Mhz) or A, 0x02 ;will set clk to 12Mhz

mov reg[OSC_CR0],A ;clk is now set at 12Mhz M8C_SetBank0

.loop:

mov A, reg[PMA0_DR] ; Get the data from the PMA space mov [X], A ; save it in data array

inc X ; increment the pointer

dec [USB_APITemp+1] ; decrement the counter jnz .loop ; wait for count to zero out

;;

;;24Mhz read PMA workaround (back to previous clock speed)

pop A ;recover previous reg[OSC_CR0] value M8C_SetBank1

mov reg[OSC_CR0],A ;clk is now set at previous value M8C_SetBank0

;;end 24Mhz read PMA workaround

References

[1]Document # 001-46932 CY8CTST120 TrueTouch™ Single-Touch Touchscreen Controller (Final)

[2]Document # 001-46929 CY8CTMG120 TrueTouch™ Multi-Touch Gesture Touchscreen Controller (Final)

[3]Document # 001-46901 CY8CTMA120 TrueTouch™ Multi-Touch All-Point Touchscreen Controller (Final)

September 25, 2008 Document No. 001-49038 Rev. ** 4

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