GCIXP1240AC Intel, GCIXP1240AC Datasheet - Page 140

• Manufacturer Part Number: GCIXP1240AC
• Description: IC MPU NETWORK 232MHZ 432-BGA
• Manufacturer: Intel

Specifications of GCIXP1240AC

• Rohs Status: RoHS non-compliant
• Processor Type: Network
• Features: 32-bit StrongARM RISC Core
• Speed: 232MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 432-BGA
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Not Compliant
• Other names: 837152

Intel
140
Figure 77. SDRAM Initialization Sequence
®
IXP1240 Network Processor
Notes:
1. Number of total initialization phase refresh cycles programmed as INIT_RFRSH value in register SDRAM_MEMINIT.
2. Burst length and CAS latency values programmed as BURSTL value in register SDRAM_MEMCTL0 emitted in this cycle.
3. INIT_DLY, tRSC values programmed into register SDRAM_MEMINIT.
4. tRP, tRC values programmed into register SDRAM_MEMCTL1
5. tRSC is minimum SDRAM programmable register value. In actual use, refresh cycles will not
occur immediately after tRSC cycles due to SDRAM unit internal pipeline delays.
SDCLK
RAS_L
CAS_L
MADR
MDAT
WE_L
DQM
Precharge
all banks
INIT_DLY
tRP
Mode Register
Set Command
(see note 2)
tRSC
Refresh
Auto
(see note 1)
tRc
Refresh
Auto
Datasheet
A8624-01