AM79C901AJCT AMD [Advanced Micro Devices], AM79C901AJCT Datasheet - Page 12

• Manufacturer Part Number: AM79C901AJCT
• Description: HomePHY Single-Chip 1/10 Mbps Home Networking PHY
• Manufacturer: AMD [Advanced Micro Devices]

PIN DESIGNATIONS (PL 068)
Listed By Group
12
Configuration
MII/GPSI
GM_MODE
ISOLATE
PHY_SEL
PHY_AD
Board Interface
RESET
XCLK/XTAL
XTAL1
XTAL2
IREF
LED_COL
LED_ACTIVITY
LED_LINK
LED_SPEED
LED_POWER
1 Mbps HomePNA PHY Network Ports
HRTXRXP/N
10BASE-T PHY Network Ports
TX±
RX±
MII Interface
TX_CLK
TXD[3:0]
TX_EN
RX_CLK
RXD[3:0]
RX_ER
RX_DV
MDC
MDIO
CRS
COL
Pin Name
Selects MII or GPSI mode
Selects MDC/MDIO and GPSI data
Isolates device if register isolate bit is set = 1
Defines default PHY
Defines bit 2 of the PHY address
RESET
Oscillator/Crystal Select
Crystal Input (20 MHz XTAL/60 MHz CLK)
Crystal Output (20 MHz XTAL)
Tied to GND via a 12.1 k 1% resistor
Collision Indication
Activity Indication
Link Valid Indication
High Speed Indication
High Power Indication
Receive/Transmit Data
Serial Transmit Data
Serial Receive Data
MII Transmit Clock
MII Transmit Data
MII Transmit Enable
MII Receive Clock
MII Receive Data
MII Receive Error
MII Receive Data Valid
MII Management Data Clock
MII Management Data Input/Output
Carrier Sense
Collision
Pin Function
P R E L I M I N A R Y
Am79C901A
Type
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
Driver Type
TSMII
XTAL
OMII
OMII
OMII
OMII
OMII
OMII
OMII
LED
LED
LED
LED
LED
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Number of
Pins
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
4
1
1
4
1
1
1
1
1
1