Cypress CY7C601xx ユーザーズマニュアル

Document 38-16016 Rev. *E

Page 19 of 68

The Silicon IDs for enCoRe II LV devices are stored in SROM tables in the part, as shown in 

The Silicon ID can be read out from the part using SROM Table reads. This is demonstrated in the following pseudo code. As
mentioned in the section 

 on page 15, the SROM variables occupy address F8h through FFh in the SRAM. Each of the variables

and their definition are given in the section 

AREA SSCParmBlkA(RAM,ABS)

    org  F8h // Variables are defined starting at address F8h

SSC_KEY1: 

 ; F8h  supervisory key

SSC_RETURNCODE:  

blk 1 ; F8h  result code

SSC_KEY2 : 

 

blk 1  ;F9h  supervisory stack ptr key

SSC_BLOCKID: 

 

blk 1 ; FAh  block ID

SSC_POINTER: 

 

blk 1 ; FBh  pointer to data buffer

SSC_CLOCK: 

 

blk 1 ; FCh  Clock

SSC_MODE: 

 

blk 1 ; FDh  ClockW ClockE multiplier

SSC_DELAY: 

 

blk 1 ; FEh  flash macro sequence delay count

SSC_WRITE_ResultCode: blk 1 ; FFh  temporary result code

_main:

mov   A, 2

mov   [SSC_BLOCKID], A// To read from Table 2 - trim values for the IMO are stored in table 2

 

mov   X, SP 

  ; copy SP into X

   

mov   A, X  

  ; A temp stored in X

   

add   A, 3               ; create 3 byte stack frame (2 + pushed A)

   

mov   [SSC_KEY2], A      ; save stack frame for supervisory code

   ; load the supervisory code for flash operations
   

mov   [SSC_KEY1], 3Ah  ;FLASH_OPER_KEY - 3Ah

 

mov   A,6 

  ; load A with specific operation. 06h is the code for Table read 

  

SSC 

  ; SSC call the supervisory ROM 

// At the end of the SSC command the silicon ID is stored in F8 (MSB) and F9(LSB) of the SRAM

.terminate:

    jmp .terminate