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PD46185092B Datasheet(PDF) 25 Page - Renesas Technology Corp |
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PD46185092B Datasheet(HTML) 25 Page - Renesas Technology Corp |
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25 / 36 page  μPD46185092B, μPD46185182B, μPD46185362B R10DS0112EJ0200 Rev.2.00 Page 25 of 35 Nov 09, 2012 Scan Register Definition (1) Register name Description Instruction register The instruction register holds the instructions that are executed by the TAP controller when it is moved into the run-test/idle or the various data register state. The register can be loaded when it is placed between the TDI and TDO pins. The instruction register is automatically preloaded with the IDCODE instruction at power-up whenever the controller is placed in test-logic-reset state. Bypass register The bypass register is a single bit register that can be placed between TDI and TDO. It allows serial test data to be passed through the RAMs TAP to another device in the scan chain with as little delay as possible. ID register The ID Register is a 32 bit register that is loaded with a device and vendor specific 32 bit code when the controller is put in capture-DR state with the IDCODE command loaded in the instruction register. The register is then placed between the TDI and TDO pins when the controller is moved into shift-DR state. Boundary register The boundary register, under the control of the TAP controller, is loaded with the contents of the RAMs I/O ring when the controller is in capture-DR state and then is placed between the TDI and TDO pins when the controller is moved to shift-DR state. Several TAP instructions can be used to activate the boundary register. The Scan Exit Order tables describe which device bump connects to each boundary register location. The first column defines the bit’s position in the boundary register. The second column is the name of the input or I/O at the bump and the third column is the bump number. Scan Register Definition (2) Register name Bit size Unit Instruction register 3 bit Bypass register 1 bit ID register 32 bit Boundary register 107 bit ID Register Definition Part number Organization ID [31:28] vendor revision no. ID [27:12] part no. ID [11:1] vendor ID no. ID [0] fix bit μPD46185092B 2M x 9 XXXX 0000 0000 0101 0001 00000010000 1 μPD46185182B 1M x 18 XXXX 0000 0000 0000 1101 00000010000 1 μPD46185362B 512K x 36 XXXX 0000 0000 0000 1110 00000010000 1 |
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