Cypress CY8CTMA120 Computer Hardware User Manual


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CY8CTST120, CY8CTMG120, CY8CTMA120
September 25, 2008 Document No. 001-49038 Rev. ** 4
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)
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