CX11656 HomePlug 1.0 PHY Data Sheet
Figure 3-15. GPSI Flow Control
GPSI_TXEN
GPSI_TXD
GPSI_TXBSY
P
P
P
P
Internal TX buffer available pulse
GPSI_RXEN
GPSI_RXD
P
P
Internal RX buffer available pulse
GPSI_COL
Case 1
Case 2
Case 3
Case 4
Case 5
TX only
RX only
RX & TX
TX, buf avail
TX, no buf avail,
frame dropped
102069_019
Figure 3-16. GPSI Transmit Timing
tGPSI_THIGH
tGPSI_TPER
GPSI_TXCLK
GPSI_TXD
tGPSI_TDELAY
tGPSI_TDELAY
GPSI_TXEN
GPSI_TXBSY
GPSI_COL
tGPSI_TTXBSYH
102069_020
Figure 3-17. GPSI Receive Timing
tGPSI_RHIGH
tGPSI_RPER
GPSI_TXCLK
GPSI_RXD
GPSI_RXEN
GPSI_COL
tGPSI_RLOW
tGPSI_RSU
tGPSI_RRXENH
tGPSI_RDH
102069_021
102069A
Conexant Proprietary and Confidential Information
3-13