Off-chip Connectivity

10.3Pin count reduction by removing functionality

You can reduce the pin count if you do not require certain functionality. The pin count reductions that can be achieved by removing functionality are described under the headings:

•Dynamic and static memory and TIC

•Dynamic and static memory on page 10-6

•Dynamic memory and TIC on page 10-6

•Static memory and TIC on page 10-7

•Dynamic memory on page 10-7

•Static memory on page 10-8.

Note

•The signals that are normally multiplexed or not taken off chip are not counted in the following tables. The signals are MPMCRPVHHOUT,

MPMCTESTREQA, and MPMCTESTREQB.

•The output and feedback clocks are not counted on the table as various clocking strategies can be used.

10.3.1Dynamic and static memory and TIC

Table 10-3 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing dynamic and static memory and a TIC.

Table 10-3 Pin counts for system with dynamic and static memory and TIC

Off-chip Connectivity

10.3.2Dynamic and static memory

Table 10-4 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing dynamic and static memory.

Table 10-4 Pin counts for system with dynamic and static memory

The MPMCTESTIN signals are not required.

10.3.3Dynamic memory and TIC

Table 10-5 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing dynamic memory and TIC.

Table 10-5 Pin counts for system with dynamic memory and TIC

The MPMCADDROUT[27:15] address signals are not required.

The following static memory signals are not required:

•nMPMPMCSTCSOUT[3:0]

•nMPMCOEOUT

•nMPMCBLSOUT[3:0]

•nMPMCWEOUT.

Off-chip Connectivity

10.3.4Static memory and TIC

Table 10-6 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing static memory and a TIC.

Table 10-6 Pin counts for system with static memory and TIC

The following dynamic memory signals are not required:

•nMPMCDYCSOUT[3:0]

•MPMCCKEOUT[3:0]

•nMPMCRASOUT

•nMPMCCASOUT

•nMPMCRPOUT

•MPMCDQMOUT[3:0].

10.3.5Dynamic memory

Table 10-7 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing dynamic memory.

Table 10-7 Pin counts for system with dynamic memory

The MPMCADDROUT[27:15] address signals are not required.

The following static memory signals are not required:

•nMPMPMCSTCSOUT[3:0]

•nMPMCOEOUT

•nMPMCBLSOUT[3:0]

•nMPMCWEOUT.

The MPMCTESTIN test signal is not required.

Off-chip Connectivity

10.3.6Static memory

Table 10-8 shows the pin counts that can be achieved for 32-bit and 16-bit systems containing static memory.

Table 10-8 Pin counts for system with static memory

The following dynamic memory signals are not required:

•nMPMCDYCSOUT[3:0]

•MPMCCKEOUT[3:0]

•nMPMCRASOUT

•nMPMCCASOUT

•nMPMCRPOUT.

The MPMCTESTIN test signals are not required.