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STP2002QFP
Fast Ethernet, Parallel Port, SCSI (FEPS) - STP2002QFP
Sun Microsystems,
Figure 22.
6.2.8 TDO MUX logic
This block implements the muxing of the signal which is to appear at the TDO
output pin. It has one flop to ensure that changes on the TDO pin happen on
the falling edge of JTAG_TCK when the data is not being shifted in the data
registers. When data is not being shifted through the chip, TDO is set to a
high-impedance state.
DR_CLOCK
DR_UPDATE
DR_SHIFT
BSCAN_SELECT
BSCAN_CDR
BSCAN_UDR
BSCAN_SDR
JTAG_BS
BYPASS_TDO
ISCAN_TDO
BSCAN_TDO
ID_TDO
IR_TDO
CCR_TDO
BYPASS_SELECT
CCR_SELECT
ID_SELECT
ATPG_SELECT
ISCAN_MODE
REG_SEL
JTAG_TCK
BSCAN_SELECT
JTAG_TDI
JTAG_TDO
BSCAN_SDI
JTAG_TDO_M