mx98745 Macronix International Co., mx98745 Datasheet - Page 8

• Manufacturer Part Number: mx98745
• Description: 100 Base-tx/fx Repeater Controller
• Manufacturer: Macronix International Co.

F. LED Display/EEPROM Interface, 14 pins
P/N:PM0427
PAD # Name
74
78,
76,
75
79
82
LEDEN
LDS2/EDO,
LDS1/EDI,
LDS0/EECONF
LEDO/,
EECK/,
PARSEL
LED1/PMSEL
TTL
I/O
O,
I/O,
TTL
I/O
TTL
I/O,
Table 5-1 Pin Description for XRC II (Continued)
Description
Led Output Enable. When LEDEN is asserted high, it means that varuous
internal CMOS status is shown on LED[7:0] according to the value on
LDS[2:0]
LED Output Select. LDS0 is internally pulldown and value on LDS0 will be
EEPROM loading operation (after power on reset and EECONF is set to 1)
and LDS2 will be data output from EEPROM.
When EECONF is low, EEPROM operation will be disabled.
After power on reset, LDS[2:0] work as the select pins of LED[7:0] output.
The following are corresponding definition
LDS2 LDS1 LDS0
0
0
0
1
1
LED 0/EEPROM Clock/Partition Select. Value on this pin will be latched by
(PARSEL).
When EECONF is set to 1, this pin will work as EEPROM clock pin and
output by MX98745 after power on reset. When EEPROM operation is
enabled, internal repeater function will be disabled until contents in EEPROM
is loaded into MX98745.
Receivee/Link, Partition, Isolation status and indicates 10% Network
utilization and 3% collision rate according to the value of LDS[2:0].
pin will be latched at the rising edge of RESETL and be the value of PMSEL
which can program the universal port (port 0) to PCS or MAC type MII
interface. In normal operation (after power on reset), this pin will display
port 1's Receivee/Link, Partition, Isolation status and indicates 20%
Network utilization and 6% collision rate according to the value on LDS[2:0]
of EECONF. Value on LDS1 will act as EEPROM Data Input signal during
MX98745 at the rising edge of RESETL as the value of Partition Select
LED 1/PCS & MAC type MII Select. When Power on reset, value on this
After EEPROM operation is completed, this pin will display port 0's
latched internally by MX98745 at the rising edge of RESETL as the value
0
1
1
0
0
1
0
1
0
1
8
Link/Receive
Isolation
Partition
Utilization
Collision Rate
MX98745
REV. 1.4, JUL. 8, 1998