USB97C201-MN SMSC [SMSC Corporation], USB97C201-MN Datasheet - Page 41
USB97C201-MN
Manufacturer Part Number
USB97C201-MN
Description
USB 2.0 ATA/ ATAPI Controller
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.USB97C201-MN.pdf
(59 pages)
- Current page: 41 of 59
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Note: the following settings should be used for the ISP, RT, DTE, and FTB bits for the various PIO and MWDMA
modes:
SMSC DS – USB97C201
PIO Mode 0
PIO Mode 1
PIO Mode 2-4
MWDMA 0
MWDMA 1
MWDMA 2
MODE
BIT
2
1
0
(0xDF - RESET=0x00)
ISP[1:0]
IDE_TIM
00
01
10
00
10
10
NAME
ISPE
PPE
FTB
RT[1:0]
11
11
11
00
10
11
R/W
R/W
R/W
R/W
PRELIMINARY
FTB
1:Prefetch and posting to the IDE data port is enabled for the
drive.
0: Prefetch and posting is disabled for the drive .
1: All accesses to the ATA I/O address range sample IORDY.
The IORDY sample point is specified by the “IORDY Sample
Point” field of this register.
0: IORDY sampling is disabled. The internal IORDY signal is
forced asserted guaranteeing that IORDY is sampled asserted
at the first sample point as specified by the “IORDY Sample
Point” field in this register.
Fast Timing Bank.
1: Accesses to the data port of the ATA IO address range
uses fast timings. PIO accesses to the data port use fast
timing only if bit 3 of this register is zero. Accesses to all non-
data ports of the ATA I/O address range always use the 8 bit
compatible timings.
0: Accesses to the data port of the ATA I/O address range
uses the 16 bit compatible timing.
Prefetch and Posting Enable.
IORDY Sample Point Enable.
1
1
1
0
1
1
Page 41
DTE
0
0
0
x
x
x
ATA PIO cycle speed limited by 8051 data moves
ATA PIO cycle speed limited by 8051 data moves
ATA PIO cycle speed limited by 8051 data moves
requires compatibility mode timing to be used
IDE TIMING REGISTER
DESCRIPTION
COMMENT
Rev. 03/25/2002
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