Adaptec 1737100 Programmer Manual - Page 142

AIC-6915 Ethernet LAN Controller Programmer's Manual TestMode Register (TBD) Type: R/W Internal Registers Subgroup: Ethernet Extra Registers Byte Address: 4000h - 4003h This register controls test mode of the chip. Table 7-88. TestMode Register Reset Bit(s) rw Value Description/Function 31:9 r 0 Reserved. Always reads 0. 8 r/w 7:4 r/w 0 Boot EPROM Test Select - This bit is used by the Boot EPROM control block to multiplex out test output bits instead of using regular functional output bits. This bit must be set for the test mode to be active. 0 TestBlockSelect - This field selects a block whose test information is to be driven onto the GPIODATA[3:0] pins. 3:0 r/w 0 TestSel - The test select bus is used by those blocks specified by bits 7:4. The bus is used to perform internal multiplexing of the test information and drive the result to its Test Output port. RxFrameProcessorCtrl Register Type: R/W Internal Registers Subgroup: Ethernet Extra Registers Byte Address: 4004h - 4007h Bit(s) 31:0 Table 7-89. Rx General Frame Processor Control Register Reset rw Value Description/Function r 0 Reserved: Always read as 0. TxFrameProcessorCtrl Register Type: R/W Internal Registers Subgroup: Ethernet Extra Registers Byte Address: 4008h- 400Bh Table 7-90. TxFrameProcessorCtrl Register Reset Bit(s) rw Value Description/Function 31:0 r 0 Reserved: Always read as 0. 7-70