gl813 ETC-unknow, gl813 Datasheet - Page 16

• Manufacturer Part Number: gl813
• Description: Usb 2.0 Compactflash Card Reader Controller
• Manufacturer: ETC-unknow

GL813 - USB2.0 CompactFlash Card Reader Controller
The SIE negates TXVLD to complete a packet. Once negated, the Transmit State
Machine will never reassert TXRDY until after the EOP has been loaded into the Transmit
Shift Register. Note that the UTM Transmit State Machine can be ready to start another
package immediately, however the SIE must confirm to the minimum inter-packet delays
identified in the USB 2.0 Specification.
©2001-2002 Genesys Logic Inc.—All rights reserved.
CLKOUT
TXVLD
Data
TXRDY
DP/DM
5.1.2 Transmit Timing for Data Packet
CRC. When transmitting, the SIE is always expected to present a PID as the first
byte of the data stream and if appropriate, CRC as the last bytes of the data stream.
The SIE must use LINEST0/1 to verify a Bus Idle condition before asserting TXVLD
in the TX Wait state.
PID
SYNC
Data Data Data Data
PID
Data Data Data Data CRC
CRC
CRC
C
Page 16 of 24
CRC
C
EOP
P