Instruction Manual

138 DS271F5
CS8900A
Crystal LAN™ Ethernet Controller
CIRRUS LOGIC PRODUCT DATASHEET
Standby
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.
Suspend
A feature of the CS8900A used to conserve power. When in Suspend mode, the
CS8900A can be awakened only by host command.
Transfer
The term "transfer" refers to moving frame data across the ISA bus to or from the
CS8900A.
Transmit Request
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:
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.
10.5 Suffixes Specific to the CS8900A.
These terms have meaning only at the end of a term:
A Accept
CMD Command
CFG Configure
CTL Control
Dis Disable
E Enable
h Indicates the number is hexadecimal
iE Interrupt Enable
ST Status