S6E2C2 Datasheet, PDF (174/207 Pages) Cypress Semiconductor – 32-bit ARM® Cortex®-M4F FM4 Microcontroller

S6E2C2 Series
RMII Receiving (100 Mbps/10 Mbps)
(ETHVCC = 3.0V to 3.6V, 4.5V to 5.5V, VSS = 0V, CL = 25 pF)
Parameter
Reference clock
cycle time*
Reference clock
High-pulse-width duty cycle
Reference clock
Low-pulse-width duty cycle
Received data → REFCK↑
Setup time
Received data → REFCK ↑
Hold time
Symbol
tREFCYC
tREFCYCH
tREFCYCL
tRMIIRXS
tRMIIRXH
Pin Name
E_RXCK_REFCK
E_RXCK_REFCK
E_RXCK_REFCK
E_RX03, E_RX02,
E_RX01, E_RX00,
E_RXDV
E_RX03, E_RX02,
E_RX01, E_RX00,
E_RXDV
Conditions
20 ns (typical)
tREFCYCH/tREFCYC
tREFCYCL/tREFCYC
-
-
Value
Min
Max
Unit
-
-
ns
35
65
%
35
65
%
4
-
ns
2
-
ns
*: The reference clock is fixed to 50 MHz in the RMII specifications.
The clock accuracy should meet the PHY-device specifications.
E_RXCK_REFCK
E_RX03
E_RX02
E_RX01
E_RX00
E_RXDV
tREFCYC
V_IHS
V_ILS
V_IHS
tREFCYCH
tREFCYCL
V_IHS
V_ILS
tRMIIRXS
V_IHS
V_ILS
tRMIIRXH
Document Number: 002-05030 Rev.*A
Page 174 of 207