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CC2520RHDR Datasheet(PDF) 48 Page - Texas Instruments |
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CC2520RHDR Datasheet(HTML) 48 Page - Texas Instruments |
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48 / 134 page  CC2520 DATASHEET 2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER SWRS068 – DECEMBER 2007 48 WWW.TI.COM OPCODE Inputs Outputs Description Possible exceptions Security instructions INC p c[1:0] a[11:0] s[7:0] Increment the 2 C byte word with least significant byte at address A. The n th least significant byte beyond the least is located at address (A+n). (n’ < n means n’ has less significance than n) C shall be in the range 0 through 2, i.e. 1, 2 or 4 bytes are incremented. If C equals 3, a USAGE_ERROR exception shall be raised. The priority of the instruction is defined by P, which is either low (if P=0) or high (if P=1). A USAGE_ERROR exception is raised if an instruction is already active with the requested priority level (high or low). A DPU_DONE_L or DPU_DONE_H exception is raised when the operation completes, depending on the priority of the instruction. This happens regardless of whether the operation was successful or not. The instruction will always access 4 bytes regardless of the C parameter, so a MEMADDR_ERROR exception is raised if A > 0x3FC. MEMADDR_ERROR USAGE_ERROR DPU_DONE_L DPU_DONE_H ECB p k[7:0] c[3:0] a[11:0] e[11:0] s[7:0] ECB encryption. Encrypt one 16 byte block of plaintext consisting of (16-C) bytes of data read from memory, starting at address A, concatenated with C zero-bytes, using the key stored at address (16 ⋅K) and storing the output at address E. The priority of the instruction is defined by P, which is either low (if P=0) or high (if P=1). The output is 16 AES-128 encrypted bytes. A USAGE_ERROR exception is raised if an instruction is already active with the requested priority level (high or low). A DPU_DONE_L or DPU_DONE_H exception is raised when the operation completes, depending on the priority of the instruction. This happens regardless of whether the operation was successful or not. MEMADDR_ERROR USAGE_ERROR DPU_DONE_L DPU_DONE_H ECBO p k[7:0] c[3:0] a[11:0] s[7:0] ECB encryption. Encrypt one 16 byte block of plaintext consisting of (16-C) bytes of data read from memory, starting at address A, concatenated with C zero-bytes, using the key stored at address (16 ⋅K) and storing the output by overwriting the data from address A. The priority of the instruction is defined by P, which is either low (if P=0) or high (if P=1). The output is 16 AES-128 encrypted bytes. A USAGE_ERROR exception is raised if an instruction is already active with the requested priority level (high or low). A DPU_DONE_L or DPU_DONE_H exception is raised when the operation completes, depending on the priority of the instruction. This happens regardless of whether the operation was successful or not. MEMADDR_ERROR USAGE_ERROR DPU_DONE_L DPU_DONE_H ECBX p k[7:0] c[3:0] a[11:0] e[11:0] s[7:0] ECB encryption and XOR. As ECB except each ciphertext byte is bitwise XOR’ed with the existing byte in the destination address E before it is written to that address. USAGE_ERROR MEMADDR_ERROR DPU_DONE_L DPU_DONE_H |
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