NXP Semiconductors EVB912UF32, Руководство пользователя, Страница: 27 / 44

Support Information
Secure Digital Connector
User’s Manual EVB912UF32 Evaluation Board - Rev 1
MOTOROLA Support Information 21
3.4 Secure Digital Connector
Connector J17 is the EVB912UF32 Secure Digital (SD) connector.
Figure 3-4 gives the pin assignments and Table 3-3 gives the signal
descriptions for this connector.
17 DD0 DATA BIT 0 — Bidirectional
18 DD15 DATA BIT 15 — Bidirectional
20 KEY Missing pin to key connector
21 DMARQ Direct Memory Access Request — Active high output
23 IOWR_B Input/Output Write — Active low input
25 IORD_B Input/Output Read — Active low input
27 IORDY Input/Output Ready — Active low output
28 CSEL Cable Select
29 DMACK_B DIrect Memory Access Acknowledge — Active low input
31 INTRQ Interrupt Request — Active high output
32, 34 NC Not Connected
33 A1 ADDRESS BIT 1 — Device address input
35 A0 ADDRESS BIT 0 — Device address input
36 A2 ADDRESS BIT 2 — Device address input
37 CS0_B Chip Select 0 — Active low input
38 CS1_B Chip Select 1 — Active low input
39 BVD1_DASP Device Active or Slave Present — Bidirectional
Pin(s)
Function
Description