pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 234

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
PNX15XX_SER_3
Product data sheet
Figure 12: Isolation Translation Logic
DATA_DIR- AD8
XIO_SEL[1] - IDE_ENABLE
10K
VCC
SYS_RSTN_OUT
PCI AD[23:16]
PCI AD[31:24]
Data Transfer Operation
In PIO mode, data transfer to/from disk is done using read/write operations of the
command and control block registers. PI/PO protocol is explained in the ATA-2
specification.
All command block registers can be programmed using direct or indirect access in the
XIO block. All disk registers are programmed. When the disk is ready to transfer data,
DMA is enabled.
AD13
AD15
AD14
AD12
AD11
AD10
AD9
AD0
A1[7]
A1[0]
A2[0]
A2[7]
74LS16245
Rev. 3 — 17 March 2006
Buffer
Dir1/2
OE_n1/2
OE1/2
74LS244
B2[0]
B1[0]
B1[7]
B2[7]
DD[7:0]
DD[15:8]
VCC
1K
RESET_n
Note the 10 K pullup required for INTREQ,
XIO_SEL and the 1.0 K pullup required for
DIOW-, DIOR- and IORDY.
INTREQ
VCC
1K
VCC
VCC
1K
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
VCC
Chapter 7: PCI-XIO Module
1K
PNX15xx Series
VCC
GPIO
1K
CS1
CS0
DA2
DA1
DA0
DIOW-
DIOR-
IORDY
7-15