Motorola MC68838 User Manual page 4

TABLE OF CONTENTS (Continued)
Paragraph
Number
3.2.3 Receive Status Register (RX_STATUS)................................................. 3-13
3.2.4 Transmit Status Register (TX_STATUS)................................................ 3-15
3.3 Interrupt Registers........................................................................................... 3-17
3.3.1 Interrupt Event Register A (INTR_EVENT_A) ........................................ 3-17
3.3.2 Interrupt Event Register B (INTR_EVENT_B) ........................................ 3-20
3.3.3 Interrupt Event Register C (INTR_EVENT_C)........................................ 3-23
3.3.4 Interrupt Mask Register A (INTR_MASK_A)........................................... 3-23
3.3.5 Interrupt Mask Register B (INTR_MASK_B)........................................... 3-23
3.3.6 Interrupt Mask Register C (INTR_MASK_C).......................................... 3-23
3.4 Counter Registers........................................................................................... 3-24
3.4.1 Frame Count Register (FRAME_CT)....................................................... 3-25
3.4.2 Lost Count, Error Count Register (LOST_CTERROR_CT) ................. 3-25
3.4.3 Token Count Register (TOKEN_CT) ....................................................... 3-25
3.5 Station Parameter Registers......................................................................... 3-25
3.5.1 My Short Address Register (MSA)........................................................... 3-25
3.5.2 My Long Address Register (MLA_A, MLA_B, MLA_C)........................ 3-26
3.5.3 Target Request Time Register (T_REQ) ................................................. 3-26
3.5.4 TVX, TRT Initial Timer Parameter Register (TVX_VALUE, T_MAX) .. 3-26
3.6 Protocol Timing Registers ............................................................................. 3-27
3.6.1 TVX Timer Register (TVX_TIMER)........................................................... 3-27
3.6.2 TRT Timer Register (TRT_TIMER_A, TRT_TIMER_B).......................... 3-27
3.6.3 THT Timer, Sent Count Registers (THT_TIMER_A,
THT_TIMER_B, SENT_COUNT).............................................................. 3-28
3.6.4 TRT Time Remaining Register (T_NEG_A, T_NEG_B) ....................... 3-29
3.6.5 Information Field Register (INFO_REG_A)............................................. 3-29
3.6.6 Void Time Counter Register (VOID_TIME)............................................. 3-29
3.7 Internal Registers............................................................................................ 3-30
3.7.1 Revision Number Register (REV_NO_REG).......................................... 3-30
3.7.2 Packet Request Register (PKT_REQUEST) .......................................... 3-30
3.7.3 Built-In Self-Test Signature Register (BIST_SIGNATURE) ................ 3-31
3.7.4 Receive CRC Register (RX_CRC) ........................................................... 3-32
3.7.5 Transmit CRC Registers (TX_CRC)......................................................... 3-32
4.1 Clock Signals .................................................................................................. 4-1
4.2 Node Processor Interface.............................................................................. 4-2
4.3 MAC-PHY Interface ........................................................................................ 4-3
4.4 Receive System Interface.............................................................................. 4-3
4.5 Transmit System Interface............................................................................. 4-4
4.6 CAM Interface.................................................................................................. 4-5
4.7 Test Signals..................................................................................................... 4-6
iv
Title
Section 4
Signal Description
MC68838 USER'S MANUAL
P a g e
Number
MOTOROLA