GCIXP1200GB Intel, GCIXP1200GB Datasheet - Page 128

• Manufacturer Part Number: GCIXP1200GB
• Description: IC MPU NETWORK 200MHZ 432-BGA
• Manufacturer: Intel

Specifications of GCIXP1200GB

• Rohs Status: RoHS non-compliant
• Processor Type: Network
• Features: 32-bit StrongARM RISC Core
• Speed: 200MHz
• 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: 839428

Intel
7.3.8.4
7.3.8.5
128
Figure 68. BootROM Read
®
IXP1200 Network Processor
SRAM Bus - BootROM and SlowPort Timings
Timing for the BootROM and SlowPort areas are programmable through the SRAM configuration
registers described in the IXP1200 Network Processor Family Microcode Programmer’s Reference
Manual. The designer should refer to this manual to understand restrictions in selecting timing
values. Each timing illustration shows the appropriate register settings to generate the timing
shown.
SRAM Bus - BootRom Signal Protocol and Timing
Boot ROM Chip select signal
Externally Generated Signal
SLOW_EN# & CE#[3:0]
SRAM_BOOT_CONFIG
Example for the following setting in SRAM registers
SRAM_SLOW_CONFIG
31:24
LOW_EN#/DIRW#
HIGH_EN#/RDY#
09
31:16
Cycle Count =
RES
SLOW_WE#
SLOW_RD#
SLOW_EN#
23:16
0A
SLOW_RD#/SLOW_WE# Assert. (9)
DQ[31:0]
CE#[3:0]
A[18:0]
SCLK
SLOW__EN# Assert (10)
15:8
15:8
0x0B
05
2
SLOW_RD#/SLOW_WE# Deassert. (5)
7:0
1
0x0B
03
7:0
BootROM Cycle Count (11)
Cycle time = Cycle Count + 1 (12 cycles)
SLOW__EN# Deassert. (3)
0
SRAM SlowPort Cycle Count (Does not apply to BootROM)
11
BootROM Cycle Count (11)
10
SLOW_EN# Assert. (10)
9
SLOW_RD# Assert. (9)
8
7
Valid CE
Valid Address
6
Valid
Valid CE
5
4
SLOW_RD# Deassert. (5)
3
SLOW_EN# Deassert. (3)
2
1
0
11
Datasheet
A7028-02
10
9