AX88655P ASIX [ASIX Electronics Corporation], AX88655P Datasheet - Page 10

• Manufacturer Part Number: AX88655P
• Description: 5-Port 10/100/1000BASE-T Ethernet Switch
• Manufacturer: ASIX [ASIX Electronics Corporation]

2.1.5 GMII Interface Port 4
GTX_CLK4
TX_EN4
TXD4[7:0]
TX_CLK4
COL4
CRS4
RX_DV4
RX_CLK4
RXD4[7:0]
2.2 Miscellaneous
X_IN
X_OUT
GCLK
SYSCLK
/GCLK _EN
/SYSCLK_EN
FILTER
/RST
MDIO
MDC
SDIO
SDC
SID[4:0]
GPIO[4:0]
Signal Name
Signal Name
I/O/PU
I/O/PU
I/O/PU
I/O/PU
I/PD
I/PD
I/PD
I/PD
I/PU
I/PU
I/PD
I/PD
I/PD
I/UP
I/UP
I/O
I/O
O
O
O
O
O
I
I
I
I
I
I
I
148 – 141
134 - 127
180 - 176
Pin No.
Pin No.
156,
155,
154,
153,
138
149
140
126
125
136
135
161
168
157
158
170
165
166
163
164
152
35
36
40
125MHz Clock Output: Please references section 2.1.1.
Transmit Enable: Please references section 2.1.1.
Transmit Data: Please references section 2.1.1.
MII Transmit Clock Input: Please references section 2.1.1.
Collision Detect: Please references section 2.1.1.
Carrier Sense: Please references section 2.1.1.
Receive Data Valid: Please references section 2.1.1.
Receive Clock Input: Please references section 2.1.1.
Receive Data: Please references section 2.1.1.
Crystal or OSC 27MHz Input: This is a clock source of PLL. The
PLL will generate a 90MHz internal clock.
Crystal 27MHz Output: This pin should be floating with single-ended
external clock.
OSC 125MHz Input: 125MHz Clock for GMII
System Clock Input: 85 ~ 90MHz Clock for switch kernel
GCLK Enable: 0) use GCLK; 1) Reserved
System Clock Enable: 0) use SYSCLK; 1) 90MHz generated by
internal PLL circuit from X_IN clock source.
FILTER: For internal PLL circuit use.
Reset: Active Low
Station Management Data In/Out: PHY Management Data Input and
Output.
Station Management Data Clock Out: PHY Management Clock.
EEPROM Data In/Out: EEPROM Serial Data Input and Output.
EEPROM Data Clock In/Out: EEPROM Serial Clock. (Note: It is
output pin if the embedded MPU is active; otherwise as input pin)
Switch ID: MPU can identify the switch and PHYs with this ID.
Default is “00011b”.
General Purpose I/O: The 5 GPIOs can be programmed for special
application. (Note: The function is not released to user normally.
Please contact with ASIX directly if any requirement)
AX88655 P 5-Port 10/100/1000BASE-T Ethernet Switch
10
Description
Description
ASIX ELECTRONICS CORPORATION