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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP83916 датащи(PDF) 25 Page - National Semiconductor (TI) |
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DP83916 датащи(HTML) 25 Page - National Semiconductor (TI) |
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25 / 96 page  40 SONIC-16 Registers (Continued) 42 STATUSCONTROL REGISTERS This set of registers is used to convey statuscontrol infor- mation tofrom the host system and to control the operation of the SONIC-16 These registers are used for loading com- mands generated from the system indicating transmit and receive status buffering data tofrom memory and provid- ing interrupt control The registers are selected by asserting chip select to the SONIC-16 and providing the necessary address on register address pins RA5 – RA0 Tables 4-1 4-2 and 4-3 show the locations of all SONIC-16 registers and where information on the registers can be found in the data sheet TABLE 4-1 User Registers RA5 – RA0 Access Register Symbol Description (section) COMMAND AND STATUS REGISTERS 00h RW Command CR 431 01 (Note 3) RW Data Configuration DCR 432 02 RW Receive Control RCR 433 03 RW Transmit Control TCR 434 04 RW Interrupt Mask IMR 435 05 RW Interrupt Status ISR 436 3F (Note 3) RW Data Configuration 2 DCR2 437 TRANSMIT REGISTERS 06 RW Upper Transmit Descriptor Address UTDA 438 3441 07 RW Current Transmit Descriptor Address CTDA 438 353 RECEIVE REGISTERS 0D RW Upper Receive Descriptor Address URDA 439 3441 0E RW Current Receive Descriptor Address CRDA 439 3443 13 RW End of Buffer Word Count EOBC 439 342 14 RW Upper Receive Resource Address URRA 439 3441 15 RW Resource Start Address RSA 439 341 16 RW Resource End Address REA 439 341 17 RW Resource Read Pointer RRP 439 341 18 RW Resource Write Pointer RWP 439 341 2B RW Receive Sequence Counter RSC 439 3432 CAM REGISTERS 21 RW CAM Entry Pointer CEP 41 4310 22 (Note 1) R CAM Address Port 2 CAP2 41 4310 23 (Note 1) R CAM Address Port 1 CAP1 41 4310 24 (Note 1) R CAM Address Port 0 CAP0 41 4310 25 (Note 2) RW CAM Enable CE 41 4310 26 RW CAM Descriptor Pointer CDP 41 4310 27 RW CAM Descriptor Count CDC 41 4310 TALLY COUNTERS 2C (Note 4) RW CRC Error Tally CRCT 4311 2D (Note 4) RW FAE Tally FAET 4311 2E (Note 4) RW Missed Packet Tally MPT 4311 25 |
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