CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 126

• Manufacturer Part Number: CS8900-CQ3
• Description: Crystal LAN ISA Ethernet Controller
• Manufacturer: Cirrus Logic

Standby
Suspend
Transfer
Transmit Request
9.5 Suffixes Specific to the CS8900A.
These terms have meaning only at the end of a term:
126
1) The host writes a Transmit Command to the TxCMD register (PacketPage base + 0144h).
2) The host writes the transmit frame’s length to the TxLength register (PacketPage base + 0146h).
3) The host reads BusST (Register 18) to see in the Rdy4TxNOW bit (Bit 8) is set.
A feature of the CS8900A used to conserve power. When in Standby mode, the CS8900A can
be awakened either by 10BASE-T activity or host command.
A feature of the CS8900A used to conserve power. When in Suspend mode, the CS8900A can
be awakened only by host command.
The term "transfer" refers to moving frame data across the ISA bus to or from the CS8900A.
A Transmit Request is issued by the host to initiate the start of a new packet transmission. A
Transmit Request consists of the following three steps in exactly the order shown:
A
CMD
CFG
CTL
Dis
E
h
iE
ST
Accept
Command
Configure
Control
Disable
Enable
Indicates the number is hexadecimal
Interrupt Enable
Status
CIRRUS LOGIC PRODUCT DATA SHEET
Crystal LAN™ ISA Ethernet Controller
CS8900A
DS271PP3