ADVANCE INFORMATION
CYWB0224ABS/CYWB0224ABM
Document #: 001-11710 Rev. *A
Page 3 of 6
SD/SDIO/MMC+/CE-ATA Port (S-Port)
When Astoria is configured through firmware to support
SD/SDIO/MMC+/CE-ATA, this interface supports the following:
■ The Multimedia Card System Specification, MMCA Technical
Committee, Version 4.1.
■ SD Memory Card Specification - Part 1, Physical Layer
Specification, SD Group, Version 1.10, October 15, 2004.
■ SD Memory Card Specification - Part 1, Physical Layer
Specification, SD Group, Version 2.0, May 9, 2006.
■ SD Specifications - Part E1 SDIO specification, Version 1.10,
August 18, 2004.
■ CE-ATA Specification - CE-ATA Digital Protocol, CE-ATA
Committee, Version 1.1, September, 2005
West Bridge Astoria provides support for 1-bit and 4-bit SD and
SDIO cards; 1-bit, 4-bit and 8-bit MMC; MMC+ cards, and
CE-ATA drive. For the SD, SDIO, MMC/MMC Plus, and CE-ATA,
this block supports one card for one physical bus interface.
Astoria supports SD commands including the multisector
program command, which is handled by API.
Table 1. Astoria Pin Assignments
Pin Name
IO
Pin Description
Power Domain
Non-multiplexing
Multiplexing
SRAM
PNAND
SPI
CLK
CLK
Ext pull up
SCK
I
Clock/SPI clock
PVDDQ
VGND
CE#
CE#
CE#
CS#
SS#
I
Chip Enable/NAND Chip Select/SPI Slave
Select
A0
Ext pull up
A0
CLE#
Ext pull up
I
Address Bus 0/PNAND Command Latch
A1
Ext pull up
A1
RB#
Ext pull up
IO
Address Bus 1/PNAND Ready_Buy
A[3:2]
set A[3:2] = 01
A[3:2]
set A[3:2] = 00
set A[3:2] = 10
I
Addr. Bus [3:2]
A4
Ext pull up
A4
WP#
Ext pull up
I
Addr. Bus 4/NAND Write Protect
A5
SCL
A5
SCL
SCL
IO
Address Bus 5/I2C clock
A6
SDA
A6
SDA
SDA
IO
Address Bus 6/I2C data
A7]
Ext pull up
A7
set A7 to 0 - LBD
set A7 to 1 - SBD
Ext pull up
I
Addr. Bus 7
DQ[0]
AD[0]
DQ[0]
IO[0]
SDI
IO
SPI Input/Data Bus 0
DQ[1]
AD[1]
DQ[1]
IO[1]
SDO
IO
SPI Output/Data Bus 1
DQ[15:2]
AD[15:2]
DQ[15:2]
IO[15:2]
Ext pull up
IO
Data Bus
ADV#
ADV#
ALE#
Ext pull up
I
Address Valid
OE#
OE#
OE#
RE#
Ext pull up
I
Output Enable
WE#
WE#
WE#
WE#
Ext pull up
I
Write Enable
INT#
INT#
INT#
INT#
SINT
O
Interrupt Request
DRQ#
DRQ#
DRQ#
DRQ#
N/C
O
DMA Request
DACK#
DACK#
DACK#
DACK#
Ext pull up
I
DMA Acknowledgement
D+
IO/Z
USB D+
UVDDQ
UVSSQ
D-
IO/Z
USB D-
UVALID
O
External USB Switch Control
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