DS2148T datasheet(4/75 Pages) DALLAS

4 / 75 page

DS2148/Q48

4 of 75

1. LIST OF FIGURES

Figure 3-1 DS2148 BLOCK DIAGRAM..................................................................................................... 7

Figure 3-2 RECEIVE LOGIC ...................................................................................................................... 8

Figure 3-3 TRANSMIT LOGIC................................................................................................................... 9

Figure 4-1 PARALLEL PORT MODE PINOUT (BIS1 = 0, BIS0 = 1 or 0) ............................................ 21

Figure 4-2 SERIAL PORT MODE PINOUT (BIS1 = 1, BIS0 = 0) .......................................................... 21

Figure 4-3 HARDWARE MODE PINOUT (BIS1 = 1, BIS0 = 1) ............................................................ 22

Figure 5-1 SERIAL PORT OPERATION FOR READ ACCESS (R=1) MODE 1.................................. 25

Figure 5-2 SERIAL PORT OPERATION FOR READ ACCESS MODE 2 ............................................. 25

Figure 5-3 SERIAL PORT OPERATION FOR READ ACCESS MODE 3 ............................................. 26

Figure 5-4 SERIAL PORT OPERATION FOR READ ACCESS MODE 4 ............................................. 26

Figure 5-5 SERIAL PORT OPERATION FOR WRITE ACCESS (R=0) MODES 1&2 ...……………27

Figure 5-6 SERIAL PORT OPERATION FOR WRITE ACCESS MODES 3&4 …………...…………27

Figure 9-1 BASIC INTERFACE ………………………………………………………………………..50

Figure 9-2 PROTECTED INTERFACE USING INTERNAL RECEIVE TERMINATION.................... 51

Figure 9-3 PROTECTED INTERFACE USING EXTERNAL RECEIVE TERMINATION .................. 52

Figure 9-4 E1 TRANSMIT PULSE TEMPLATE...................................................................................... 53

Figure 9-5 T1 TRANSMIT PULSE TEMPLATE...................................................................................... 54

Figure 9-6 JITTER TOLERANCE............................................................................................................. 55

Figure 9-7 JITTER ATTENUATION ........................................................................................................ 55

Figure 10-1 BGA 12 x 12 PIN LAYOUT .................................................................................................. 59

Figure 12-1 INTEL BUS READ TIMING (PBTS = 0, BIS1 = 0, BIS0 = 0) ............................................ 63

Figure 12-2 INTEL BUS WRITE TIMING (PBTS = 0, BIS1 = 0, BIS0 = 0)........................................... 63

Figure 12-3 MOTOROLA BUS TIMING (PBTS = 1, BIS1 = 0, BIS0 = 0) ............................................ 64

Figure 12-4 INTEL BUS READ TIMING (PBTS = 0, BIS1 = 0, BIS0 = 1) ............................................ 66

Figure 12-5 INTEL BUS WRITE TIMING (PBTS = 0, BIS1 = 0, BIS0 = 1)........................................... 66

Figure 12-6 MOTOROLA BUS READ TIMING (PBTS = 1, BIS1 = 0, BIS0 = 1) ................................. 67

Figure 12-7 MOTOROLA BUS WRITE TIMING (PBTS = 1, BIS1 = 0, BIS0 = 1)................................ 67

Figure 12-8 SERIAL BUS TIMING (BIS1 = 1, BIS0 = 0)........................................................................ 68

Figure 12-9 RECEIVE SIDE TIMING ...................................................................................................... 69

Figure 12-10 TRANSMIT SIDE TIMING................................................................................................. 70

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