T13/1532D Volume 3 Revision 0 2.3.1 40-pin Connector The l/O connector is a 40-pin connector.The header mounted to a host or device is shown in Figure 3 and the dimensions are shown in Table 6.The connector mounted to the end of the cable is shown in Figure 4 and the dimensions are shown in Table 7.Signal assignments on these connectors are shown in Table 8. The pin locations are governed by the cable plug,not the receptacle.The way in which the receptacle is mounted on the printed circuit board affects the pin positions,and pin 1 shall remain in the same relative position.This means the pin numbers of the receptacle may not reflect the conductor number of the plug.The header receptacle may or may not be polarized,and all the signals are relative to pin 20,which is keyed. By using the plug positions as primary,a straight cable can connect devices.As shown in Figure 5,conductor 1 on pin 1 of the plug shall be in the same relative position no matter what the receptacle numbering looks like. If receptacle numbering was followed,the cable would have to twist 180 degrees between a device with top- mounted receptacles,and a device with bottom-mounted receptacles. Page 9
T13/1532D Volume 3 Revision 0 Page 9 2.3.1 40-pin Connector The I/O connector is a 40-pin connector. The header mounted to a host or device is shown in Figure 3 and the dimensions are shown in Table 6. The connector mounted to the end of the cable is shown in Figure 4 and the dimensions are shown in Table 7. Signal assignments on these connectors are shown in Table 8. The pin locations are governed by the cable plug, not the receptacle. The way in which the receptacle is mounted on the printed circuit board affects the pin positions, and pin 1 shall remain in the same relative position. This means the pin numbers of the receptacle may not reflect the conductor number of the plug. The header receptacle may or may not be polarized, and all the signals are relative to pin 20, which is keyed. By using the plug positions as primary, a straight cable can connect devices. As shown in Figure 5, conductor 1 on pin 1 of the plug shall be in the same relative position no matter what the receptacle numbering looks like. If receptacle numbering was followed, the cable would have to twist 180 degrees between a device with topmounted receptacles, and a device with bottom-mounted receptacles
T13/1532D Volume 3 Revision 0 A1±T1 A13 max Pos.2- A3 min Pos.40 A2±T2 A14±T6 A6 min A5 max A10±T5 Pos.20 入 Pos.1 Pin removed Pos.39 Detail A A8±T4 Pin 1 F Square or round pin Detail A Indicator A9 min nw A11+T5/-T3 A7 max A12min A4±T3 0IU00000 F A10±T5 Section F-F Figure 3-Host or device 40-pin I/O header Table 6-Host or device 40-pin l/O header Dimension Millimeters Inches A1 58.17 2.290 A2 48.26 1.900 A3 56.01 2.205 A4 5.84 0.230 A5 9.55 0.376 A6 6.22 0.245 A7 10.16 0.400 A8 0.64 0.025 A9 4.06 0.160 A10 2.54 0.100 A11 6.35 0.250 A12 6.48 0.255 A13 0.33 0.013 A14 0.58 0.023 T1 0.51 0.020 T2 0.13 0.005 T3 0.25 0.010 T4 0.03 0.001 T5 0.08 0.003 T6 0.18 0.007 Page 10
T13/1532D Volume 3 Revision 0 Page 10 A6 min A2 ± T2 A3 min A1 ± T1 A5 max A10 ± T5 Pos. 40 Pos. 1 Pos. 39 Pos. 2 Pos. 20 Pin removed F A11 +T5/-T3 Detail A A7 max A9 min A12 min F Pin 1 Indicator A4 ± T3 A10 ± T5 Section F-F A8 ± T4 Square or round pin A13 max A14 ± T6 Detail A Figure 3 − Host or device 40-pin I/O header Table 6 − Host or device 40-pin I/O header Dimension Millimeters Inches A 1 58.17 2.290 A 2 48.26 1.900 A 3 56.01 2.205 A 4 5.84 0.230 A 5 9.55 0.376 A 6 6.22 0.245 A 7 10.16 0.400 A 8 0.64 0.025 A 9 4.06 0.160 A 10 2.54 0.100 A 11 6.35 0.250 A 12 6.48 0.255 A 13 0.33 0.013 A 14 0.58 0.023 T 1 0.51 0.020 T 2 0.13 0.005 T 3 0.25 0.010 T 4 0.03 0.001 T 5 0.08 0.003 T 6 0.18 0.007
T13/1532D Volume 3 Revision 0 A8 min A5 min P0s.1 A7 max See NOTE Indicator Mating pins 0.025 sq.or round A1±T3 Pos.39 Pos.1 A2±T1 A4±T2 A8±T3 A3±T1 问回回回回回回回回回回回回回回回回回回 回 可回回回回回回回回回可回回回回回回回回 Pos.20 Pos.2 A4±T2 Blocked Pos.40 NOTE-The optional polarizing feature is recommended.Some host receptacles do not provide a polarizing slot. Figure 4-40-pin I/O cable connector Table 7-40-pin l/O cable connector Dimension Millimeters Inches A1 55.37 2.180 A2 48.26 1.900 A3 6.10 0.240 A4 2.54 0.100 A5 6.48 0.255 A6 4.57 0.180 A7 3.81 0.150 A8 1.27 0.050 T1 0.13 0.005 T2 0.08 0.003 T3 0.25 0.010 Page 11
T13/1532D Volume 3 Revision 0 Page 11 A3 ± T1 Pos. 1 A1 ± T3 A8 min Pos. 1 A7 max Indicator A5 min A8 ± T3 A2 ± T1 A4 ± T2 A4 ± T2 Pos. 40 Pos. 39 Pos. 2 Pos. 20 Blocked Mating pins 0.025 sq. or round See NOTE NOTE − The optional polarizing feature is recommended. Some host receptacles do not provide a polarizing slot. Figure 4 − 40-pin I/O cable connector Table 7 − 40-pin I/O cable connector Dimension Millimeters Inches A 1 55.37 2.180 A 2 48.26 1.900 A 3 6.10 0.240 A 4 2.54 0.100 A 5 6.48 0.255 A 6 4.57 0.180 A 7 3.81 0.150 A 8 1.27 0.050 T 1 0.13 0.005 T 2 0.08 0.003 T 3 0.25 0.010
T13/1532D Volume 3 Revision 0 Table 8-40-pin I/O connector interface signals Signal name Connector Conductor Connector Signal name contact contact RESET- 1 1 2 2 Ground DD7 ⊙ 3 4 4 DD8 DD6 5 6 6 DD9 DD5 7 7 8 8 DD10 DD4 9 9 10 10 DD11 DD3 11 11 12 12 DD12 DD2 13 13 14 14 DD13 DD1 15 15 16 16 DD14 DDO 17 17 18 18 DD15 Ground 19 19 20 20 (keypin) DMARQ 21 21 22 22 Ground DIOW-:STOP 23 23 24 24 Ground DIOR-:HDMARDY- 25 25 26 26 Ground :HSTROBE IORDY:DDMARDY- 27 27 28 28 CSEL :DSTROBE DMACK- 29 29 30 30 Ground INTRQ 31 31 32 32 Obsolete (see note) DA1 33 33 34 34 PDIAG-:CBLID- DAO 35 35 36 36 DA2 CS0- 37 37 38 38 CS1- DASP- 39 39 40 40 Ground NOTE-Pin 32 was defined as IOCS16 in ATA-2,ANSI X3.279-1996. 1 40 20 2 Circuit board Circuit board 1 40 20 2 Figure 5-40-pin I/O header mounting 2.3.1.1 40-conductor cable The 40-conductor cable assemby is shown in Figure 6 with dimensions in Table 9.Cable capacitance shall not exceed 35 pf. Page 12
T13/1532D Volume 3 Revision 0 Page 12 Table 8 − 40-pin I/O connector interface signals Signal name Connector contact Conductor Connector contact Signal name RESET- 1 1 2 2 Ground DD7 3 3 4 4 DD8 DD6 5 5 6 6 DD9 DD5 7 7 8 8 DD10 DD4 9 9 10 10 DD11 DD3 11 11 12 12 DD12 DD2 13 13 14 14 DD13 DD1 15 15 16 16 DD14 DD0 17 17 18 18 DD15 Ground 19 19 20 20 (keypin) DMARQ 21 21 22 22 Ground DIOW-:STOP 23 23 24 24 Ground DIOR-:HDMARDY- :HSTROBE 25 25 26 26 Ground IORDY:DDMARDY- :DSTROBE 27 27 28 28 CSEL DMACK- 29 29 30 30 Ground INTRQ 31 31 32 32 Obsolete (see note) DA1 33 33 34 34 PDIAG-:CBLIDDA0 35 35 36 36 DA2 CS0- 37 37 38 38 CS1- DASP- 39 39 40 40 Ground NOTE − Pin 32 was defined as IOCS16 in ATA-2, ANSI X3.279-1996. 1 40 20 2 Circuit board Circuit board 1 40 20 2 Figure 5 − 40-pin I/O header mounting 2.3.1.1 40-conductor cable The 40-conductor cable assemby is shown in Figure 6 with dimensions in Table 9. Cable capacitance shall not exceed 35 pf
T13/1532D Volume 3 Revision 0 A1 A2 A3 Host Connector Polarity stripe on Device 0 Device 1 #1 conductor Connector Connector Figure 6-40-conductor cable configuration Table 9-40-conductor cable configuration Dimension Millimeters Inches A1 254.00min 10.00min 457.20max 18.00max A2 127.00min 5.00 min 304.80max 12.00max A3 127.00min 5.00 min 152.40max 6.00 max 2.3.1.2 80-conductor cable assembly using the 40-pin connector To provide better signal integrity,the optional 80-conductor cable assembly is specified for use with 40-pin connectors.Use of this assembly is mandatory for systems operating at Ultra DMA modes greater than 2.The mating half of the connector is as described in 2.3.1.Every other conductor in the 80-conductor cable is connected to the ground pins in each connector. The electrical requirements of the 80-conductor ribbon cable are shown in Table 10 and the physical requirements are described in Figure 7 and Table 11. Figure 8 and Table 12 describe the physical dimensions of the cable assembly.The connector in the center of the cable assembly labeled Device 1 Connector is optional.The System Board connector shall have a blue base and a black or blue retainer.The Device 0 Connector shall have a black base and a black retainer.The Device 1 Connector shall have a gray base and a black or gray retainer.The cable assembly may be printed with connector identifiers. There are alternative cable conductor to connector pin assignments depending on whether the connector attaches all even or odd conductors to ground.Table 13 shows the signal assignments for connectors that ground the even numbered conductors.Table 14 shows the signal assignments for connectors that ground the odd numbered conductors.Only one connector type,even or odd,shall be used in a given cable assembly. Connectors shall be labeled as grounding the even or odd conductors as shown in Figure 9.Cable assemblies conforming to Table 13 are interchangable with cable assemblies conforming to Table 14. All connectors shall have position 20 blocked to provide keying.Pin 28 in Device 1 Connector shall not be attached to any cable conductor,the connector contact may be removed to meet this requirement (see 3.2.13.2).Pin 34 in the Host Connector shall not be attached to any cable conductor and shall be attached to Ground within the connector (see 4.4). Page 13
T13/1532D Volume 3 Revision 0 Page 13 A2 A1 A3 Host Connector Device 0 Connector Device 1 Connector Polarity stripe on #1 conductor Figure 6 − 40-conductor cable configuration Table 9 − 40-conductor cable configuration Dimension Millimeters Inches A 1 254.00 min 457.20 max 10.00 min 18.00 max A 2 127.00 min 304.80 max 5.00 min 12.00 max A 3 127.00 min 152.40 max 5.00 min 6.00 max 2.3.1.2 80-conductor cable assembly using the 40-pin connector To provide better signal integrity, the optional 80-conductor cable assembly is specified for use with 40-pin connectors. Use of this assembly is mandatory for systems operating at Ultra DMA modes greater than 2. The mating half of the connector is as described in 2.3.1. Every other conductor in the 80-conductor cable is connected to the ground pins in each connector. The electrical requirements of the 80-conductor ribbon cable are shown in Table 10 and the physical requirements are described in Figure 7 and Table 11. Figure 8 and Table 12 describe the physical dimensions of the cable assembly. The connector in the center of the cable assembly labeled Device 1 Connector is optional. The System Board connector shall have a blue base and a black or blue retainer. The Device 0 Connector shall have a black base and a black retainer. The Device 1 Connector shall have a gray base and a black or gray retainer. The cable assembly may be printed with connector identifiers. There are alternative cable conductor to connector pin assignments depending on whether the connector attaches all even or odd conductors to ground. Table 13 shows the signal assignments for connectors that ground the even numbered conductors. Table 14 shows the signal assignments for connectors that ground the odd numbered conductors. Only one connector type, even or odd, shall be used in a given cable assembly. Connectors shall be labeled as grounding the even or odd conductors as shown in Figure 9. Cable assemblies conforming to Table 13 are interchangable with cable assemblies conforming to Table 14. All connectors shall have position 20 blocked to provide keying. Pin 28 in Device 1 Connector shall not be attached to any cable conductor, the connector contact may be removed to meet this requirement (see 3.2.13.2). Pin 34 in the Host Connector shall not be attached to any cable conductor and shall be attached to Ground within the connector (see 4.4)