(China (Mainland))
Product Summary
The fas216-pc4 is a Fast Architecture SCSI Processor. The fas216-pc4 chips are part of the QLogic SCSI processor family with features designed to facilitate SCSI-2 support (FAS216 and FAS236) and SCSI-3 support (FAS216U and FAS236U). The fas216-pc4 can transfer synchronous data at 10 Mbytes/sec. The FAS216U and FAS236U can transfer data at 20 Mbytes/sec with SCAM support. The normal 5-Mbytes/sec transfer rate and the fast 10-Mbytes/sec transfer rate (FAS216U and FAS236U) are supported on-chip by setting the FASTSCSI bit (Configuration 3 register bit 4). Asynchronous transfers up to 7 Mbytes/sec are also supported. The fas216-pc4 is firmware and pin compatible with the FAS216 and FAS236 chips, respectively. Figure 1 shows the FAS2x6 block diagram.
Parametrics
fas216-pc4 absolute maximum ratings: (1)VDD, Supply voltage: 4.75 to 5.25 V; (2)IDD, Supply current (static IDD): 4 mA; (3)IDD, Supply current (dynamic IDD): 40 to -60 mA; (4)TA, Ambient temperature: 0 to 70 oC.
Features
fas216-pc4 features: (1)24-bit transfer counter; (2)Initiator and target modes; (3)Differential driver protection (DIFFSENS); (4)Direct memory access (DMA) burst transfer rate up to 20 Mbytes/sec; (5)Pipelined command structure; (6)16-byte data FIFO between DMA and SCSI channels; (7)Parity pass-through on FIFO data; (8)Part-unique ID code; (9)On-chip, single-ended SCSI transceivers (48-mA drivers); (10)Clock rates up to 40 MHz.
Diagrams
