CS5501-SD datasheet(36/54 Pages) CIRRUS

36 / 54 page

Notes:

1. CS5501 in Synchronous External Clocking mode.

2. COPS 444 max baud = 62.5 kbps. (Others = 500 kbps)

3. See timing diagram for detailed timing.

Assumptions:

1. G0 used as CS.

2. Register 0 (upper four nibbles) used to store 16-bit word.

Initial Code:

SPINIT: OGI

; CS = 1, inactive; deselect CS5501

; Reset carry, used in next

XAS

; instruction to turn SK off

Code to get word of data:

SP_IN:

LBI

0,12

; Point to start of data

; storage location

; Set carry - enables SK in

; XAS instruction

OGI

; CS = 0, active; select CS5501

LEI

; Shift register mode, S0 = 0

XAS

; Start clocking serial port

NOP

;

NOP

; Wait for (first) M.S. nibble

GETNIB: NOP

;

XAS

; Get nibble of data from SIO

XIS

; Put nibble in memory, inc. pointer,

GETNIB

; if overflow, jump around this inst.

; Reset carry - disables SK in XAS

; instruction

XAS

; Bogus read - stops SK

OGI

; CS = 1, inactive; deselect CS5501

RET

;

Figure A4. COPS/CS5501 Interface

CS5501

COPS 444

(All COPS)

SDATA

SCLK

MODE

CS5503

Notes:

1. CS5501 in Synchronous External Clocking mode.

2. Using 68HC11’s SPI port. (Can use SCI and

CS5501’s Asynchronous mode.)

3. Maximum bit rate is 1.05 Mbps.

Assumptions:

1. PA6 used as CS.

2. 68HC11 in single-chip mode.

3. Receive data via polling.

4. Normal equates for peripheral registers.

5. Data returned in register D.

Initial Code:

SPINIT: PSHA

; Store temporary copy of A

LDAA #%x1xxxxxx ; Bit 6 = 1, all others are don’t cares

STAA PORTA

; CS = 1, inactive; deselect CS5501

LDAA #$10

;

STAA SPCR

; Disable serial port

LDAA #%xx0110xx ; SS-input, SCK-output,

; MOSI-output, MISO-input

STAA DDRD

; Data direction register for port D

LDAA #$50

; Enable serial port, CMOS outputs,

STAA SPCR

; master, highest clock rate (int. clk/2)

LDAA SPSR

;

LDAA SPDR

; Bogus read to clr port and SPIF flag

PULA

; Restore A

RTS

;

Code to get word of data:

SP_IN:

LDAA #%x0xxxxxx ;

STAA PORTA

; CS = 0, active; select CS5501

STAA SPDR

; Put data in serial port to start clk

WAIT1: LDAA SPSR

; Get port status

BPL

WAIT1

; If SPIF (MSB) 0, no data yet, wait

LDAA SPDR

; Put most significant byte in A

STAA SPDR

; Start serial port for second byte

WAIT2: LDAB SPSR

; Get port status

BPL

WAIT2

; If SPIF (MSB) 0, no data yet, wait

LDAB #%x1xxxxxx ;

STAB PORTA

; CS = 1, inactive; deselect CS5501

LDAB SPDR

; Put least significant byte in B

RTS

;

Figure A3. 68HC11/CS5501 Serial Interface

CS5501

68HC11

(68HC05)

MISO

MODE

+5V

PA6

SCK

SDATA

SCLK

CS5503

CS5501/CS5503

DS31F2

CS5501-SD 数据表(PDF) 36 Page - Cirrus Logic

CS5501-SD 数据表(HTML) 36 Page - Cirrus Logic

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

数据表下载

链接网址

CS5501-SD 数据表(PDF) 36 Page - Cirrus Logic

CS5501-SD 数据表(HTML) 36 Page - Cirrus Logic

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

数据表 下载

链接网址

数据表下载