 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
Z53C80 Datasheet(PDF) 6 Page - Zilog, Inc. |
|
|
|||||||||||||||||||||||||||||
Z53C80 Datasheet(HTML) 6 Page - Zilog, Inc. |
|
|
6 / 40 page  6 Z53C80 SCSI PS97SCC0200 ZILOG SCSI BUS The following signals are all Bi-directional, active Low, open-drain, with 48 mA sink capacity. All pins interface directly with the SCSI Bus. /ACK /Acknowledge (Bi-directional, Open-Drain, Active Low). /ACK is driven by the Initiator and indicates an acknowledgment for a SCSI data transfer. /ACK is received as a response to the /REQ Signal in the Target role. /ATN /Attention (Bi-directional, Open-Drain, Active Low). /ATN is driven by the Initiator and indicates an attention condition. /ATN is received and is responded to by entering the Message Out Phase in the Target role. /BSY /Busy (Bi-directional, Open-Drain, Active Low). /BSY indicates that the SCSI Bus is being occupied. /BSY can be driven by both the Target and the Initiator device. /C//D /Control//Data (Bi-directional, Open-Drain, Active Low). /C//D indicates Control or Data information is on the SCSI Bus. This signal is driven by a Target and is received by the Initiator. /I//O /Input//Output (Bi-directional, Open-Drain, Active Low). /I//O is driven by a Target and controls the direction of data transfer on the SCSI Bus. When asserted, this signal indicates input to the Initiator. When not asserted, this signal indicates output from the Initiator. This signal is also used to recognize the difference between the Selection and Reselection Phases. /MSG /Message (Bi-directional, Open-Drain, Active Low). The Target drives /MSG active during the Message Phase and is received by the Initiator. /REQ /Request (Bi-directional, Open-Drain, Active Low). Received by the Initiator and driven by a Target, /REQ indicates a request for an SCSI data-transfer handshake. /RST SCSI Bus RESET (Bi-directional, Open-Drain, Active Low). The /RST signal shows a SCSI Bus RESET condition has occurred. /DB7-/DB0,/DBP /Data Bits, /Parity Bits (Bi-directional, Open-Drain, Active Low). These eight data bits (/DB7-/ DB0), plus a parity bit (/DBP) form the SCSI Data Bus. /DB7 has the highest priority during the Arbitration phase and is the most significant bit (MSB). Data parity is odd and is always generated and optionally checked, which is not valid during Arbitration. /SEL /Select (Bi-directional, Open-Drain, Active Low). /SEL is used by a Target to select an Initiator, or by an Initiator to reselect a Target. |
Similar Part No. - Z53C80 |
|
Similar Description - Z53C80 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
