RPIXP2850BB Intel, RPIXP2850BB Datasheet - Page 127

• Manufacturer Part Number: RPIXP2850BB
• Manufacturer: Intel

Specifications of RPIXP2850BB

• Operating Supply Voltage (typ): 1.3/1.5/2.5/3.3V
• Operating Supply Voltage (max): 1.575/2.7/3.465V
• Operating Supply Voltage (min): 1.235/2.3/3.135V
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Not Compliant

Slowport
Figure 74.
Hardware Design Guide
Note: To meet interface timing requirements, Intel suggests the external interface logic be implemented
Processor
The Slowport is an external interface to the Intel
and is used for 8-bit flash PROM access and 8-, 16-, or 32-bit microprocessor device access. The
Slowport allows the Intel XScale
devices. The Slowport supports 4-, 8-, and 16-Mbyte flash sizes.
The address bus and data bus are multiplexed to reduce the pin count and 24 bits of address are
shifted out on three clock cycles. Therefore, an external set of buffers is needed to latch the
address; two chip selects are provided – see
in a high speed CPLD (Complex Programmable Logic Device), as shown in
Generic Slowport Connection
Network
IXP2800
Intel
SP_CS_L[0]
SP_CS_L[1]
SP_AD[7:0]
SP_ACK_L
SP_ALE_L
SP_WR_L
SP_A[1:0]
SP_RD_L
SP_CLK
®
CY2305
Driver
Clock
®
CE#
CP
CE#
CP
CE#
CP
core to perform read/write data transfers to external slave
D[7:0]
Q[7:0]
D[7:0]
Q[7:0]
D[7:0]
Q[7:0]
A[24:18]
A[17:10]
Figure 74
A[9:2]
74f377
74f377
74f377
®
IXP2800 or Intel
(note that the ACK signal is optional).
IXP28XX Network Processor
®
OE_L
WE_L
CS_L
A[1:0]
D[7:0]
OE_L
WE_L
CS_L
A[1:0]
D[7:0]
ACK_L
IXP2850 Network Processor,
Figure
A[24:2]
A[24:2]
A9318-02
77.
Slowport
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