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STPCCONSUMER-II Datasheet(PDF) 27 Page - STMicroelectronics |
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STPCCONSUMER-II Datasheet(HTML) 27 Page - STMicroelectronics |
27 / 93 page STRAP OPTIONS Release 1.5 - January 29, 2002 27/93 3. STRAP OPTIONS This chapter defines the STPC Consumer-II Strap Options and their location. Some strap options are left programmable for future versions of silicon. . Table 3-1. Strap Options Signal Designation Actual Settings1 Set to ’0’ Set to ’1’ MD1 Reserved Pull up - - MD2 HCLK PLL Speed User defined see Section 3.1.4. bit 6 MD3 User defined see Section 3.1.4. bit 7 MD4 PCICLKO Division User defined see Section 3.1.3. bit 1 MD5 MCLK/HCLK Sync (see Section 3.1.1.) User defined Async Sync MD6 PCICLKO frequency User defined see Section 3.1.1. bit 6 MD7 Reserved Pull down - - MD10 Reserved Pull down - - MD11 Reserved Pull down - - MD14 Reserved Pull up - - MD16 Reserved Pull up - - MD17 PCI_CLKO Divisor User defined see Section 3.1.3. bit 1 MD18 Reserved Pull-up - - MD19 Reserved Pull-up - - MD20 DCLK Pad Direction User defined Input Output MD21 Reserved Pull up - - MD22 Reserved Pull up - - MD23 Reserved Pull up - - MD24 HCLK PLL Speed User defined see Section 3.1.4. bit 3 MD25 User defined see Section 3.1.4. bit 4 MD26 User defined see Section 3.1.4. bit 5 MD27 Reserved Pull down - - MD28 Reserved Pull down - - MD29 Reserved Pull down - - MD30 Reserved Pull down - - MD40 CPU Mode (see Section 3.1.3.) User defined X1 X2 MD41 Reserved Pull down - - MD42 Reserved Pull up - - MD43 Reserved Pull down - - MD44 Bus select (see Section 3.1.1.) User defined ISA Local Bus MD45 Reserved Pull down - - MD46 Reserved Pull up - - MD47 Reserved Pull down - - MD48 Reserved Pull up - - TC Reserved Pull up - - DACK_ENC[2:0] Reserved Pull up - - Note1: Where a strap is represented by a ’Pull up’ or ’Pull down’, these have to be adhered to. If it is represented as a ’- ’ it can be left unconnected. Where ’User defined’, the strap is set by the user. |
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