cn8237 Mindspeed Technologies, cn8237 Datasheet - Page 268

• Manufacturer Part Number: cn8237
• Description: Atm Oc-12 Servicesar Plus With Xbr Traffic Management
• Manufacturer: Mindspeed Technologies

12.0 PCI Bus Interface
12.9 Interface Module to Serial EEPROM
Figure 12-1. EEPROM Connection
12-8
SAR
EEPWR
12.9 Interface Module to Serial EEPROM
The Interface Module implements the protocol to allow the PCI core to connect to
a serial EEPROM.
the EEPROM can occur. If HRST* is applied while the EEPROM is being
accessed, that is, right after HRST* goes inactive, the access is abnormally
terminated with indeterminate effects on the EEPROM. In order to reset the
EEPROM, its power must be cycled. A 12 mA pin, EEPWR is added to supply
power to the EEPROM if the above condition cannot be guaranteed from
happening. Whenever HRST* is active, EEPWR is a logic low. When HRST*
goes to a logic high (inactive), EEPWR immediately goes to a logic high.
Figure 12-1
SDA
SCL
A condition can arise where the protocol is violated and unknown operation of
Mindspeed Technologies
illustrates the suggested connection of the EEPROM.
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
R
™
R
EEPROM
V
CC
28237-DSH-001-C
CN8237
8237_094