IDT79RC32V334-133BBI IDT, Integrated Device Technology Inc, IDT79RC32V334-133BBI Datasheet - Page 5

• Manufacturer Part Number: IDT79RC32V334-133BBI
• Description: IC PROC 32BIT CORE 133MHZ 256BGA
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: Interprise™r

Specifications of IDT79RC32V334-133BBI

• Processor Type: RISC 32-Bit
• Speed: 133MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Other names: 79RC32V334-133BBI

Pin Description Table
and pull-downs require
Local System Interface
mem_data[31:0]
mem_addr[25:2]
mem_cs_n[5:0]
mem_oe_n
IDT 79RC32334—Rev. Y
The following table lists the pins provided on the RC32334. Note that those pin names followed by ”_n” are active-low signals. All external pull-ups
Name
Output
Output
Type
10 kΩ resistor.
I/O
I/O
[25:10] Z
Status
Reset
State
[9:2] L
Z
H
H
Capability
Strength
[25:17] Low
[16:2] High
Low with
internal
Drive
pull-up
High
High
Local System Data Bus
Primary data bus for memory. I/O and SDRAM.
Memory Address Bus
These signals provide the Memory or DRAM address, during a Memory or DRAM bus transaction. During
each word data, the address increments either in linear or sub-block ordering, depending on the transac-
tion type. The table below indicates how the memory write enable signals are used to address discreet
memory port width types.
mem_addr[22] Alternate function: reset_boot_mode[1].
mem_addr[21] Alternate function: reset_boot_mode[0].
mem_addr[20] Alternate function: reset_pci_host_mode.
mem_addr[19] Alternate function: modebit [9].
mem_addr[18] Alternate function: modebit [8].
mem_addr[17] Alternate function: modebit [7].
mem_addr[16] Alternate function: sdram_addr[16].
mem_addr[15] Alternate function: sdram_addr[15].
mem_addr[14] Alternate function: sdram_addr[14].
mem_addr[13] Alternate function: sdram_addr[13].
mem_addr[11] Alternate function: sdram_addr[11].
mem_addr[10] Alternate function: sdram_addr[10].
mem_addr[9] Alternate function: sdram_addr[9].
mem_addr[8] Alternate function: sdram_addr[8].
mem_addr[7] Alternate function: sdram_addr[7].
mem_addr[6] Alternate function: sdram_addr[6].
mem_addr[5] Alternate function: sdram_addr[5].
mem_addr[4] Alternate function: sdram_addr[4].
mem_addr[3] Alternate function: sdram_addr[3].
mem_addr[2] Alternate function: sdram_addr[2].
Memory Chip Select Negated
Recommend external pull-up.
Signals that a Memory Bank is actively selected.
Memory Output Enable Negated
Recommend external pull-up.
Signals that a Memory Bank can output its data lines onto the cpu_ad bus.
DMA (32-bit) mem_we_n[3]
32-bit
16-bit
8-bit
Port Width
Table 1 Pin Description (Part 1 of 7)
mem_we_n[3]
Byte High Write Enable mem_addr[1]
Not Used (Driven High) mem_addr[1]
5 of 30
mem_we_n[3]
Pin Signals
mem_we_n[2] mem_we_n[1]
mem_we_n[2] mem_we_n[1]
mem_we_n[2]
Description
Not Used (Driven
Low)
mem_addr[0]
mem_we_n[1]
mem_we_n[0]
mem_we_n[0]
Byte Low Write
Enable
Byte Write Enable
August 31, 2004
mem_we_n[0]