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SVC471 Datasheet Write Operation All writes to the memory array begin with a WREN op-code. The next op-code is the WRITE instruction. This op-code must include the address MSB. It is followed by a single byte address value. In total, the 9-bits specify the address of the first byte ofthe write operation. Subsequent bytes are data and they are written sequentially. Addresses are incremented internally as long as the bus master continues to issue clocks. If the last address of lFFh is reached, the counter will roll over to OOOh. Data is written MSB first. A write operation is shown in Figure 9. SVC471 Price The GDDR3 SDRAM provides a mirror function (MF) ball to change the physical_location of the control lines and all address lines which helps to route devices back to back. The MF ball will affect RAS, CAS, WE, CS and CKE on balls H3, F5, H9, F9 and H4 respectively and AO, A1, A2, A3, A4, A5, A6, A7, A8, A9, A1 0, A1 1, BAO, BAl and BA2 0n balls K4, H2, K3, M4, K9, H11, K1 0, L9, K1 1, M9, K2, L4, G4, G9 and H10 respectively and only detects a DC input. The MF ball should be tied directly to VSS or VDD depending on the control line orientation desired. When the MF ball is tied low the ball orientation is as follows, RAS - H3, CAS - F4, WE - H9, CS - F9, CKE - H4, AO - K4, A1 - H2, A2 - K3, A3 - M4, A4 - K9, A5 - H11, A6 - K10, A7 - L9, A8 - K11, A9 - M9, A10 - K2, A11 - L4, BAO - G4, BAl - G9 and BA2 - H10. The high condition on the MF ball will change the location of the control balls as follows; CS - F4, CAS - F9, RAS - H10, WE - H4, CKE - H9, AO - K9, A1 - H11,A2 - K10, A3 - M9, A4 - K4, A5 - H2, A6 - K3, A7 - L4, A8 - K2, A9 - M4, A10 - K11, A11 - L9. BAO - G9. BAl - G4 and BA2 - H3. SVC471 on stock
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