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CL-PS6700
Preliminary Product Bulletin
FEATURES
s Direct interface to CL-PS7111 low-power microcontroller
-- Custom multiplexed address/data bus for low pin count -- Supports 13 and 18 MHz operating frequencies
Low-Power PC Card Controller for the CL-PS7111
OVERVIEW
The CL-PS6700 connects directly to a PCMCIA Rel. 2.01 socket and has a custom interface to the CL-PS7111 microcontroller. The CL-PS7111 can suppor t up to two CL-PS6700 devices, which allows up to two PC Card sockets per system. Addresses and data are passed to the CL-PS6700 through 16 bits of the 32-bit Data bus (D[15:0]). The PC Card socket is effectively isolated by the CL-PS6700. Except for power and ground pins, the pins on the socket only contact to the rest of the system through the CL-PS6700.
s Fully compatible with PCMCIA Rel. 2.01 specification s One or two CL-PS6700s per system s Low-power states
-- Operating (25 mW, typical) -- Idle -- Standby (virtually zero power drain)
s Support for PC Card hot insertion and removal s Read and write buffers s Support for 3.3- and 5-V PC Cards s Endian conversion s Supports the following PC Cards:
-- -- -- -- Memory-only card; flash, EPROM, or SRAM I/O card; modem and communications Cards configured as both I/O and memory DMA-capable cards (through software emulation)
CL-PS7111-to-CL-PS6700 Interface
The PC Card interface requires a 26-bit address bus and a 16-bit data bus. The interface between the CL-PS6700 and CL-PS7111 consists of a 16-bit bus that carries the address and data information, and several control signals. This bus defines a two-clock address phase during which the 26-bit PC Card address and 6 control bits are transferred, and a one- or two-clock data phase during which 1 or 4 bytes of
s 100-pin VQFP package
(cont.)
CL-PS7111-to-CL-PS6700 Interface
5 V 3 V VPP POWER MODULE VCC VPP PCTL[2:0]
SYS_RES_L RESET_L EXPCLK NCS[4] WRITE PCLK PCE_L PTYPE I/O POWER = V3V-O
PCM_VS[2:1] PCM_CD[2:1] PCM_BVD[2:1] PCM_WP PCM_RDY PCM_WAIT I/O POWER = V5V-O PCM_RESET PCM_CE[2:1] PCM_REG_L PCM_OE_L PCM_WE_L PCM_IORD_L PCM_IOWR_L PCM_A[25:0]
CL-PS7111
NEINTN
PIRQ_L
GPIO
PSLEEP_L
D[15:0]
MD[15:0]
CL-PS6700
PB[0]
PRDY
PC CARD SOCKET
PCM_D[15:0]
March 1997
CL-PS6700
Low-Power PC Card Controller for the CL-PS7111
OVERVIEW (cont.)
data are transferred. The data phase for reads can be deferred (for example, for a DMA access to the frame buffer of the CL-PS7111). If a write transfer is indicated, write data appears in the third clock phase. If a word write is indicated, write data also appears in the fourth clock phase. For read transfers, the CL-PS6700 drives the bus with read data during the first one or two clocks of the data phase. This interface bus is also shared by other memory devices and up to one additional CL-PS6700 device. The CL-PS7111 accesses the CL-PS6700 as a memorymapped peripheral on the 16-bit memory bus. A Chip Enable signal (NCS4) from the CL-PS7111 selects one CL-PS6700 device for access to a particular PC Card socket. Another Chip Enable signal (NCS5) connects a second PC Card socket. The CL-PS6700 implements the low-level interface to the PC Card socket and provides voltage translation for mixedvoltage systems. The CL-PS6700 also provides the data buffer and interrupt controls for the PC Card. Transfers between the two devices can be either 1 or 4 bytes. The CL-PS6700 can be programmed to assemble/disassemble CL-PS7111 transfers to the width of the PC Card. The CL-PS6700 has read and write buffers that allow posting of both reads and writes. The read queue is single entry; the write FIFO can queue up to four CL-PS7110 transactions (up to 16 bytes).
Cirrus Logic Direct Sales Offices
Domestic
N. CALIFORNIA Fremont TEL: 510/623-8300 FAX: 510/252-6020 S. CALIFORNIA Irvine TEL: 714/453-5961 FAX: 714/453-5962 Westlake Village TEL: 805/371-5860 FAX: 805/371-5861 NORTHWESTERN AREA Portland, OR TEL: 503/620-5547 FAX: 503/620-5665 SOUTH CENTRAL AREA Austin, TX TEL: 512/255-0080 FAX: 512/255-0733 Irving, TX TEL: 972/252-6698 FAX: 972/252-5681 Houston, TX TEL: 713/257-2525 FAX: 713/257-2555 NORTHEASTERN AREA Andover, MA TEL: 508/474-9300 FAX: 508/474-9149 SOUTHEASTERN AREA Duluth, GA TEL: 770/935-6110 FAX: 770/935-6112 Raleigh, NC TEL: 919/859-5210 FAX: 919/859-5334 Boca Raton, FL TEL: 407/241-2364 FAX: 407/241-7990 HONG KONG Tsimshatsui TEL: 852/2376-0801 FAX: 852/2375-1202 ITALY Milan TEL: 39/2-3360-5458 FAX: 39/2-3360-5426 JAPAN Tokyo TEL: 81/3-3340-9111 FAX: 81/3-3340-9120 KOREA Seoul TEL: 82/2-565-8561 FAX: 82/2-565-8565 SINGAPORE TEL: 65/743-4111 FAX: 65/742-4111 TAIWAN Taipei TEL: 886/2-718-4533 FAX: 886/2-718-4526 UNITED KINGDOM London, England TEL: 44/1727-872424 FAX: 44/1727-875919
International
FRANCE Paris TEL: 33/1-48-12-2812 FAX: 33/1-48-12-2810 GERMANY Herrsching TEL: 49/81-52-40084 FAX: 49/81-52-40077
The Company
Headquartered in Fremont, California, Cirrus Logic is a leading manufacturer of advanced integrated circuits for desktop and portable computing, telecommunications, and consumer electronics. The Company applies its system-level expertise in analog and digital design to innovate highly integrated, software-rich solutions. Cirrus Logic has developed a broad portfolio of products and technologies for applications spanning multimedia, graphics, communications, system logic, mass storage, and data acquisition. The Cirrus Logic formula combines innovative architectures in silicon with system design expertise. We deliver complete solutions N chips, software, evaluation boards, and manufacturing kits N ontime, to help you win in the marketplace. Cirrus LogicOs manufacturing strategy ensures maximum product quality, availability, and value for our customers. Talk to our systems and applications specialists; see how you can benet from a new kind of semiconductor company. Copyright (c) 1997 Cirrus Logic Inc. All rights reserved.
Preliminary product information describes products that are in production, but for which full characterization data is not yet available. Cirrus Logic Inc. has made best efforts to ensure that the information contained in this document is accurate and reliable. However, the information is subject to change without notice. No responsibility is assumed by Cirrus Logic Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This document implies no license under patents, copyrights, or trade secrets. Cirrus Logic, AccuPak, DirectVPM, DIVA, FastPath, FasText, FeatureChips, FilterJet, Get into it, Good Data, Laguna, Laguna3D, MediaDAC, MotionVideo, RSA, SimulSCAN, S/LA, SMASH, SofTarget, TextureJet, TVTap, UXART, Video Port Manager, VisualMedia, VPM, V-Port, WavePort, and WebSet are trademarks of Cirrus Logic Inc., which may be registered in some jurisdictions. Other trademarks in this document belong to their respective companies. CRUS and Cirrus Logic International, Ltd. are trade names of Cirrus Logic Inc.
Hot Insertion Support
The CL-PS6700 PC Card controller allows PC Cards to be inserted or removed while system power is on. The CL-PS7111 controller typically applies power to a PC Card socket after it has detected a properly inserted card. The device removes the power before the card is removed (that is, when the CPU detects that the card lock is deasserted). Since each card is isolated from the system by the associated CL-PS6700, insertion and removal of cards do not cause interference on the system buses.
Card Configuration and Access
After power-on or reset, a PC Card defaults to a memoryonly card. The CL-PS7111 then reads the CIS of the card to determine the card type, access time, and so on, and configures the CL-PS6700 to access the card. Each PC Card's VCC and VPP pins are individually controlled by its associated CL-PS6700. The CL-PS7111 controls the power to a card by writing to the CL-PS6700 registers. The CL-PS6700 ensures that its signals to the sockets are in the proper state before applying or removing power. The CL-PS6700 device is available in a 100-pin VQFP package. The device can be used with both operating frequencies of the CL-PS7111 (13 and 18 MHz at 2.7 and 3.3 V).
Cirrus Logic Inc. 3100 West Warren Ave., Fremont, CA 94538 TEL: 510/623-8300 FAX: 510/252-6020 Publications Order Information: 800/359-6414 (USA) or 510/249-4200 World Wide Web: http://www.cirrus.com 456700-001

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