PNX1500E NXP Semiconductors, PNX1500E Datasheet - Page 234
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PNX1500E
Manufacturer Part Number
PNX1500E
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1500E.pdf
(828 pages)
Specifications of PNX1500E
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Volume 1 of 1
PNX15XX_PNX952X_SER_N_4
Product data sheet
Registers
All IDE device registers are defined in the ATA-2 Specification. These registers can be
accessed directly from PI or indirectly via GPXIO registers. The lower five bits of the
GPXIO address register need to be configured as follows:
Table 4: GPXIO Address Configuration
Programming IDE Registers
IDE is a submodule of PCI-XIO. It shares PCI pins with other XIO blocks. Three XIO
SEL pins can be configured for use by any XIO device. Each SEL pin is associated
with the profile register in the PCI block. The profile register determines the mode of
the SEL pin, pulse width for control signals and memory apertures for each mode.
Before accessing any IDE register, the appropriate profile register needs to be
programmed. For example, if XIO_SEL[1] has been used for IDE, the sel1_profile
register needs to be programmed and IDE needs to be enabled.
Address to be
Written
5’b40
5’b44
5’b48
5’b4C
5’b50
5’b54
5’b58
5’b5C
5’b38
•
•
•
•
•
•
•
•
At power on, the IDE disk will respond in PIO-0 mode only.
Program the appropriate register in PIO-0 mode to set PIO-4 mode.
Using sel1_profile register, set lo and high period of DIOR/DIOW pulses for PIO-4
mode.
High period in selx_profile register is used for the setup time of DA/CS lines with
DIOR/DIOW.
Low period in selx_profile register is used for the lo period of the DIOR/DIOW
pulse.
Hold of DA/CS with respect to DIOR/DIOW is always for one PCI clock.
Recommended values for sel_we_hi and sel_we_lo for PIO-0 mode are 7 and 13,
respectively (assuming a 33 MHz PCI clock).
Recommended values for sel_we_hi and sel_we_lo for PIO-4 mode are 1 and 3
respectively.
Rev. 4.0 — 03 December 2007
Register Name
Data register
ERR/Feature
Sector count
Sector number
Cylinder Low
Cylinder High
Device/Head
Status/Command
Alternate status/Device
control
Address on IDE
CS1
1
1
1
1
1
1
1
1
0
PNX15xx/952x Series
CS0
0
0
0
0
0
0
0
0
1
Chapter 7: PCI-XIO Module
DA2
0
0
0
0
1
1
1
1
1
© NXP B.V. 2007. All rights reserved.
DA1
0
0
1
1
0
0
1
1
1
DA0
0
1
0
1
0
1
0
1
0
7-234
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