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CH375
USB CH375
3E http://wch.cn
1
CH375 USB USB-HOST USB-DEVICE/SLAVE CH375 8 /DSP/MCU/MPU USB CH375 /DSP/MCU/MPU CH375 USB CH372 CH375 CH372 CH375 USB CH372 CH372DS1.PDF CH375 USB USB CH375 USB USB CH375 Mass-Storage USB USB /USB /U
D [7-0] USB USB USB / USB U / A0 RD# WR#
DSP MCU MPU
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INT# CS# CH375
D+ D-
2
USB-HOST USB V2.0 USB CH372 64 12Mbps USB 1.5Mbps USB USB Bulk-Only SCSIUFIRBC USB USB /USB /U /USB U USB 8 4 5V 3.3V SOP-28 RoHS SOP28 DIP28 CH374
CH375
3
SOP-28
7.62mm 300mil
1.27mm 50mil
28
CH375B
4
28 1223 9 13 14 10 11 2215 4 3 www..com 27 1 8 VCC GND V3 XI XO UD+ UDD7D0 RD# WR# CS# INT# A0 USB USB 0.1uF USB 3.3V VCC 5V 0.01uF USB D+ USB D- 8 A0=1 A0=0 USB USB USB USB USB
24
ACT#
5 6 2 25 26 7
TXD RXD RSTI RST RST# NC.

CH375
5
B H DSP MCU/MPU/SCM USB USB USB CH372 01H 02H 03H 05H 06H 0AH 0BH 0BH 15H 16H 17H 22H 28H 2BH
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GET_IC_VER SET_BAUDRATE ENTER_SLEEP RESET_ALL CHECK_EXIST GET_MAX_LUN SET_DISK_LUN SET_PKT_P_SEC SET_USB_MODE TEST_CONNECT ABORT_NAK GET_STATUS RD_USB_DATA WR_USB_DATA7 DISK_INIT DISK_SIZE DISK_READ DISK_RD_GO DISK_WRITE DISK_WR_GO DISK_INQUIRY DISK_READY DISK_R_SENSE

1mS 40mS
USB USB USB USB USB NAK USB USB
38H 34H 39H
20uS 2uS
LBA LBA
51H 53H 54H 55H 56H 57H 58H 59H 5AH
USB USB USB USB USB USB USB USB USB
51H CMD_RET_SUCCESS 5FH CMD_RET_ABORT
CH375
5.1. GET_IC_VER
7 1 6 0 5 0 0B7H 7 1 37H
5.2. SET_BAUDRATE
CH375 CH375 9600bps 1mS CH375 bps 02H 02H 03H 03H 03H 07H 03H 03H 03H 02H 03H B2H D9H 98H CCH F3H F3H C4H FAH FDH 9600 19200 57600 115200 460800 921600 100000 1000000 2000000 750000/(256-) 6000000/(256-) 0.16 0.16 0.16 0.16 0.16 0.16 0 0 0
5.3. ENTER_SLEEP
CH375 CH375 www..com USB CH375 GET_IC_VER ABORT_NAK CH375 CH375 USB_INT_WAKE_UP
5.4. RESET_ALL
CH375 40mS
5.5. CHECK_EXIST
CH375 1 CH375 CH375 57H A8H CH375 00H
5.6. GET_MAX_LUN
USB 1 38H USB USB 1
CH375
5.7. SET_DISK_LUN
USB 34H USB CH375 USB 0#
5.8. SET_PKT_P_SEC
USB 39H CH375 USB 512 DISK_SIZE 512 64 512 8 2048 32
5.9. SET_USB_MODE
USB 1 00H USB 01H USB 02H USB 04H USB 05H USB SOF 06H USB SOF 07H USB USB USB CH372 USB USB USB USB 06H CH375 USB SOF USB 07H USB USB USB USB 5 USB 7 6 USB 20uS www..com
5.10. TEST_CONNECT
USB USB 2uS USB_INT_CONNECT USB_INT_DISCONNECT USB_INT_USB_READY USB_INT_CONNECT USB USB_INT_DISCONNECT USB USB_INT_USB_READY USB USB 0
5.11. ABORT_NAK
NAK CH375 USB CH375 USB NAK CH375 SET_RETRY NAK
5.12. GET_STATUS
CH375 CH375 CH375
CH375 00H0FH 10H1FH 20H3FH
USB CH372 USB USB USB USB USB USB USB USB USB 00 1 IN 0 1010= NAK 1110= STALL XX00= PID
USB 14H USB_INT_SUCCESS 15H USB_INT_CONNECT 16H USB_INT_DISCONNECT 17H USB_INT_BUF_OVER 1DH USB_INT_DISK_READ 1EH USB_INT_DISK_WRITE 1FH USB_INT_DISK_ERR 7 6 5 4 IN USB
USB
3 0
5.13. RD_USB_DATA
USB USB USB USB 0 64 0 CH375
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5.14. WR_USB_DATA7
USB USB 2 0 64 0 CH375
5.15. DISK_INIT
USB USB USB USB USB USB CH375 USB USB_INT_DISCONNECT USB USB USB_INT_DISK_ERR USB_INT_BUF_OVER USB USB_INT_SUCCESS
5.16. DISK_SIZE
USB USB USB
CH375
CH375 USB_INT_SUCCESS RD_USB_DATA 8 4 USB 4 USB 512 SET_PKT_P_SEC
5.17. DISK_READ
USB 4 LBA 1 5 LBA LBA LBA LBA 2000GB USB 1 255 DISK_RD_GO
5.18. DISK_RD_GO
CH375 USB DISK_READ CH375 USB 64 USB_INT_DISK_READ RD_USB_DATA 64 DISK_RD_GO CH375 CH375 USB 64 CH375 CH375 USB_INT_SUCCESS USB_INT_DISK_ERR DISK_READ 1 +1 512 9 4 4* +1 USB_INT_DISK_ERR
5.19. DISK_WRITE
www..com USB 4 LBA 1 5 LBA LBA LBA LBA 2000GB USB 1 255 DISK_WR_GO
5.20. DISK_WR_GO
CH375 USB DISK_WRITE CH375 USB_INT_DISK_WRITE WR_USB_DATA7 64 DISK_WR_GO CH375 CH375 USB 64 CH375 CH375 USB_INT_SUCCESS USB_INT_DISK_ERR DISK_WRITE 1 +1 512 9 4 4* +1 USB_INT_DISK_ERR
CH375
5.21. DISK_INQUIRY
USB CH375 USB_INT_SUCCESS RD_USB_DATA 36 USB
5.22. DISK_READY
USB CH375 USB_INT_SUCCESS USB
5.23. DISK_R_SENSE
USB CH375 USB_INT_SUCCESS RD_USB_DATA
6
6.1.
CH375 USB-HOST USB CH375 USB CH372 CH372 CH375 USB USB CH375 USB USB USB USB CH375
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6.2.
CH375 CH375 TXD CH375 TXD TXD CH375 USB 6.2.1. 8 D7D0 RD# WR# CS# INT# A0CH375 8 DSPMCU CH375 CS#INT# I/O Intel CH375 RD# WR# Motorola CH375 RD# WR# R/-W CH375 A0 A0 I/O X Z CH375
CH375 CS# 1 0 0 0 0 0 WR# X 1 0 0 1 1 RD# X 1 1/X 1/X 0 0 A0 X X 1 0 0 1 D7-D0 X/Z X/Z
CH375 CH375 CH375 CH375 CH375 CH375B 7 INT#
6.2.2. USB CH375 USB RXD TXD INT# CH375 DSPMCU CH375 RXD TXD INT# CH375 1 9 1 8 1 9 0 8 CH375 9 1 8 CH375 CH375 9600bps SET_BAUDRATE 6.2.3. CH375 ACT# USB USB USB USB USB USB CH375 ACT# LED CH375 UD+ UD- USB USB USB USB USB ESD 5 CH375 RSTI RSTI CH375 RSTI CH375 35mS www..com RSTI VCC 0.1uF RST RST# CH375 RST RST#CH375 RST RST# RST RST# CH375 12MHz CH375 XI XO 12MHz XI XO 12MHz XI XO CH375B 3.3V 5V 5V CH375 VCC 5V V3 4700pF 0.02uF 3.3V CH375 V3 VCC 3.3V CH375 3.3V
6.3.
CH375 PLL USB SIE PLL 12MHz 48MHz USB SIE USB SIE USB USB SIE USB
CH375
NRZI CRC USB USB SIE /DSP/MCU /DSP/MCU /DSP/MCU USB USB 0 USB Mass-Storage CH375 7 0 8 1 8 81H 01H 2 64 82H 02H 64 2 2 2 CH375 012 USB USB USB CH375 USB USB 015 31 USB 064 Mass-Storage USB Bulk-Only SCSIUFIRBC 64 0 81632 64 USB ISSUE_TOKEN ISSUE_TKN_X CH375
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6.4.
8 CH375
CH375
A0=1 A0=0 A0=0 CH375 USB USB CH375
7
7.1.
TA TS VCC VIO CH375B VCC=5V CH375B VCC=3.3V VCC GND -40 -40 -55 -0.5 -0.5 85 85 125 6.0 VCC+0.5 V V
7.2. TA=25VCC=5V USB
3.3V 40 CH375B V3 VCC 4.5 5 5.3 VCC CH375B V3 VCC 3.3 3.3 3.6 www..com VCC=5V 12 30 ICC VCC=3.3V 6 15 VCC=5V 0.15 ISLP I/O / VCC=3.3V 0.05 VIL -0.5 0.7 VIH 2.0 VCC+0.5 VOL 4mA 0.5 VOH 4mA VCC-0.5 IUP 40 80 160 IDN -80 -140 -240 VR 2.4 2.7 3.0 ACT# 4mA 200uA CH375 INT# TXD 80uA V mA mA V V V V uA uA V
7.3. TA=25VCC=5V
RD RD# CS#RD#=CS#=0 WR WR# CS#WR#=CS#=0
CH375 FCLK TPR TRI TRD TE1 TE2 TE3 TE4 TE0 TSX TSC TSD TWW TRW TAS TAH TIS TIH TON TOF TINT TWAK
USB XI RESET_ALL SET_USB_MODE SET_ENDP? SET_BAUDRATE CH375B CH375B CH375B WR RD RD WR RD WR WR WR RD RD GET_STATUS INT#
11.995 18 100 18
12.00 30 30 30 10 2 1.5
12.005 40 40 40 20 4 1000 2
100 1.5 1.5 0.6 60 60 5 5 0 5 0 0 2 1.5 6
10000 10000
30 20 3 10
MHz mS nS mS mS uS uS uS uS uS uS uS nS nS nS nS nS nS nS nS uS mS
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CH375
8
8.1.
CH375 MCS-51 CH375 TXD 1K CH375 USB 5V +5V D+ D-USB P1 USB USB +5V USB 5V C3 CH375 C3 4700pF 0.02F C4 C5 C4 0.1F X1 C1 C2 CH375 USB-HOST X1 12MHz0.4C1 C2 15pF30pF CH375 0V 5V 100mS CH375 RSTI VCC 0.1F 0.47F C11 CH375 3.3V V3 VCC 3.3V C3 PCB C3 C4 CH375 D+ D- XI XO
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CH375
CH375 DSPMCU MCS-51 CH375 8 D7D0-RD-WR-CS A0 U2 MCS-51 U3 A7A0 U2 P20 CH375 A0U4 CH375 B000H-BFFFH CH375 BXX1H BXX0H
8.2.
CH375 TXD CH375 CH375 /DSP/MCU 3 TXD RXD INT# CH375 I/O CH375 RSTI CH375 RSTI MCS51 I/O K INT# TXD CH375 INT# TXD CH375 INT# TXD 2K5K CH375 INT# TXD 4mA 4mA
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8.3. U USB
API FAT32/16/12 SCSI/UFI/RBC Bulk-Only USB / USB USB-HOST USB-DEVICE Bulk-Only USB /
USB 4 USB CH375 USB-HOST 3
CH375
FAT CH375 U CH375 512 2K USB USB USB USB USB CH375 C USB API CH375 U FAT12FAT16 FAT32 100GB 8.3 CH375 600 RAM MCS-51 4KB 8KB 80 RAM 512 RAM U CH375 API API CH375HF?.H CH375 CH375Init U CH375DiskReady U CH375DiskSize U CH375DiskQuery CH375FileOpen CH375FileEnumer CH375FileClose CH375FileCreate CH375FileErase CH375FileReadX CH375FileWriteX CH375FileLocate /// CH375FileQuery /// CH375FileModify CH375ByteRead www..com CH375ByteWrite CH375ByteLocate

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