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CH374
USB CH374
2A http://wch.cn
1
CH374 USB USB-HOST USB-DEVICE/SLAVE 3 HUB / CH374 8 /DSP/MCU/MPU CH374 I/O SPI 3 4 SPI /DSP/MCU/MPU
D [7-0] DSP MCU MPU USB INT# CS# A0 RD# WR# CH374 UD+ UD USB U / USB USB
DSP MCU MPU
INT# SCS#
CH374 SPI
UD+ UD-
SCK SDO ( CH374-SDI ) SDI ( CH374-SDO )
USB USB U / USB USB
2
1.5Mbps 12Mbps USB USB V2.0 USB-HOST USB-DEVICE CH374U 3 USB ROOT-HUB 3 USB USB / USB USB USB USB 6MB 8 3.5MB/28MHz SPI 8 1 3 SPI SPI SPI
CH374
FAT12/FAT16/FAT32 U U 5V 3.3V 3V SOP-28SSOP-20SSOP-24 SOP-16 RoHS DIP28 CH375 CH372
3

CH374S CH374T
SOP-28 7.62mm 300mil 1.27mm 50mil 28 SSOP-20 5.30mm 209mil 0.65mm 25mil 20 CH374U CH374G HUB HUB
4
CH374S 28 1223 9 13 14 10 11 2215 4 3 27 1 8 24 CH374T 20 18 5 8 9 6 7 1710 3 2 19 1 4 VCC GND V3 XI XO UD+ UD USB USB 0.1uF USB 3.3V VCC 5V 0.01uF USB D+ USB D- 8 D3 SPI SCS#D5 SPI SCK D6 SPI SDID7 SPI SDO A0=1 A0=0 USB USB USB USB
D7D0 RD# WR# CS# INT# A0 ACT#
CH374 5 6 2 25 26 7 UEN CKO RSTI RST RST# SLP
USB UD+/UD-
5
DSP SCM/MCU/MPU/CPU CH374 00H 0FFH 0 0 1 1 X = ? 0 USB 00H-03H ???????? 04H REG_SYS_INFO XXX?XX01 04H 7 BIT_INFO_POWER_RST 0/X 0=1= 04H 6 BIT_INFO_WAKE_UP X 0=1= 1mS 04H 5 BIT_INFO_SOF_PRES =/X 1= SOF 04H 4 ? 04H 3 BIT_INFO_USB_DP USB UD+ X 04H 2 BIT_INFO_USB_DM USB UD- X 04H 1 01 01 04H 0 05H REG_SYS_CTRL 00000000 05H 7 0 0/? UEN USB 05H 6 BIT_CTRL_OE_POLAR 0 0=UEN UD+/- 1=UEN UD+/- INT# 05H 5 BIT_CTRL_INT_PULSE 0 0= 1= RST RST# 05H 4 BIT_CTRL_WATCH_DOG 0= 0 1= 05H 3 BIT_CTRL_RESET_NOW 0=1= 0 V3 USB 05H 2 BIT_CTRL_USB_POWER 0 0= VCC 5V USB 1= V3 USB
CH374 05H 1 05H 0 06H 06H 7 06H 6 06H 6 06H 5 06H 4 BIT_CTRL_OSCIL_OFF REG_USB_SETUP BIT_SETP_HOST_MODE BIT_SETP_LED_ACT BIT_SETP_AUTO_SOF BIT_SETP_USB_SPEED ROOT-HUB
06H 3 06H 2
BIT_SETP_RAM_MODE
06H 1 06H 0 06H 1 06H 0 07H 07H 7 07H 4 07H 3 07H 2 07H 1 07H 1 07H 0 08H 08H 7 08H 6 08H 0 09H 09H 7 09H 6
BIT_SETP_PULLUP_EN BIT_SETP_TRANS_EN BIT_SETP_BUS_CTRL ROOT-HUB REG_INTER_EN BIT_IE_CLK_OUT_DIV
BIT_IE_USB_RESUME BIT_IE_USB_SUSPEND BIT_IE_BUS_RESET BIT_IE_DEV_DETECT BIT_IE_TRANSFER REG_USB_ADDR BIT_ADDR_USB_DEV REG_INTER_FLAG BIT_IF_USB_DX_IN BIT_IF_USB_OE
0 0=1= USB USB 0=1= ACT# 0=1=USB SOF 0=1= SOF USB ROOT-HUB 00= 12Mbps11= 1.5Mbps = 00= 01= 128 RAM_ENDP2_EXCH/RAM_HOST_EXCH 10= 1 11= 1 USB 0=1=/ USB 0=1= USB / USB 00=/01=UD+ UD-() 10=11=UD+ UD-() = ( 48MHz / ( + 1 ) ) 0001=24MHz0010=16MHz1111=3MHz USB / 0= BIT_IF_WAKE_UP 1= USB BIT_IF_USB_RESUME USB 0=1= INT# USB 0=1= INT# USB 0=1= INT# USB 0=1= INT# USB 0 USB USB UD+/ UD- 0=/1=/ UEN USB 0=UEN 1=UEN
0/? 0 00000000 0 0 0 00
00
0 0 00 11110000 1111
0 0 0 0 0 00000000 0/? 0000000 XXX00000 X X
CH374
09H 5
BIT_IF_DEV_ATTACH
09H 4
BIT_IF_USB_PAUSE
09H 3
BIT_IF_WAKE_UP
09H 3
BIT_IF_USB_RESUME
09H 2
BIT_IF_USB_SUSPEND
09H 1
BIT_IF_BUS_RESET
09H 1
BIT_IF_DEV_DETECT
09H 0 0AH 0AH 7 0AH 6 0AH 5 0AH 4 0AH 3 0AH 2 0AH 1 0AH 0
BIT_IF_TRANSFER REG_USB_STATUS BIT_STAT_SIE_FREE BIT_STAT_SUSPEND BIT_STAT_BUS_RESET BIT_STAT_TOG_MATCH BIT_STAT_THIS_PID
BIT_STAT_THIS_ENDP
0AH 3 0AH 0
BIT_STAT_DEV_RESP
USB 0= USB // 1= USB / USB 1 1 USB 1 1 1 1 USB / 1 1 USB 1 USB 1 1 USB 1 USB 1 1 USB 1 USB 1 1 USB 1 USB 1 1 USB 1 USB USB SIE 0=/1=/ USB 0=1= USB 0=USB // 1=USB 0=1= USB / PID 00=OUT 01=/ 10=IN 11=SETUP USB 00= 001= 1 10= 211=/ USB PID 0010= OUT/SETUP ACK 1010= IN/OUT/SETUP NAK 1110= IN/OUT/SETUP STALL 0011= IN DATA0 1011= IN DATA1 XX00= =/
=/X
0/X
0/X
0/X
0/X
0/X
0/X
0/X 1XXXXXXX 1/X X X X XX
XX
XXXX
CH374
0BH 0CH 0CH 7 0CH 6 0CH 5 0CH 4 0CH 3 0CH 0 0DH 0DH 7 0DH 6 0DH 5 0DH 4 0DH 3 0DH 0 0EH 0EH 7 0EH 6 0EH 5 0EH 4 0EH 3 0EH 2 0EH 1 0EH 0 0DH 0DH 7 0DH 4 0DH 3 0DH 0 0EH 0EH 7 0EH 6 0EH 5 0EH 4
REG_USB_LENGTH REG_USB_ENDP0 BIT_EP0_RECV_TOG BIT_EP0_TRAN_TOG BIT_EP0_RECV_RESP
BIT_EP0_TRAN_RESP REG_USB_ENDP1 BIT_EP1_RECV_TOG BIT_EP1_TRAN_TOG BIT_EP1_RECV_RESP
BIT_EP1_TRAN_RESP REG_USB_ENDP2 BIT_EP2_RECV_TOG BIT_EP2_TRAN_TOG BIT_EP2_RECV_RESP BIT_EP2_TRAN_RESP REG_USB_H_TOKEN BIT_HOST_PID_TOKEN
USB / USB USB 2 USB USB 0 0 0=DATA01=DATA1 0 0=DATA01=DATA1 0 OUT 00= ACK01= 10= NAK11= STALL 0 IN 0000 1000= 0 8 1110= NAK1111= STALL = USB 1 1 0=DATA01=DATA1 1 0=DATA01=DATA1 1 OUT 00= ACK01= 10= NAK11= STALL 1 IN 0000 1000= 0 8 1110= NAK1111= STALL = USB 2 2 0=DATA01=DATA1 2 0=DATA01=DATA1 2 OUT 00= ACK01=/ 10= NAK11= STALL 0 0 2 IN 00= DATA0/DATA101=/ 10= NAK11= STALL USB / PID 1101=SETUP 0001=OUT 1001=IN 0101=SOF = SOF SIE 0000 1111= 0 15 USB 0=DATA01=DATA1 0=DATA01=DATA1 0 0=//1=/
XXXXXXXX 00000000 0 0 00
0000 ======== = = =
==== 00000000 0 0 00 0/? 0/? 00 ======== ====
BIT_HOST_PID_ENDP REG_USB_H_CTRL BIT_HOST_RECV_TOG BIT_HOST_TRAN_TOG BIT_HOST_RECV_ISO
==== 00000000 0 0 0/? 0
CH374 0EH 3 0EH 2 0EH 1 0EH 0 0FH-1FH 20H-27H 28H-2FH 30H-37H 38H-3FH 40H-7FH C0H-FFH 80H-BFH 40H-7FH C0H-FFH 80H-BFH BIT_HOST_START BIT_HOST_TRAN_ISO RAM_ENDP0_TRAN RAM_ENDP0_RECV RAM_ENDP1_TRAN RAM_ENDP1_RECV RAM_ENDP2_TRAN RAM_ENDP2_RECV RAM_ENDP2_EXCH RAM_HOST_TRAN RAM_HOST_RECV RAM_HOST_EXCH
0=1= 0 0 0 0=//1=/ USB 0 USB 0 USB 1 USB 1 USB 2 USB 2 USB 2 USB USB USB
0 0/? 0/? 0 ???????? ======== ======== ======== ======== ======== ======== ======== ======== ======== ========
6
6.1.
CH374 8 SPI CH374G SPI CH374 CH374 CS#WR# RD# WR# RD# CS# SPI CH374 INT# CH374 CH374 INT# CH374 REG_INTER_FLAG
6.2.
8 D7D0 RD# WR# CS# A0CH374 8 DSPMCU CH374 CS# Intel CH374 RD# WR# Motorola CH374 RD# WR# R/-W I/O X Z CH374 CS# WR# RD# A0 D7-D0 CH374 1 0 0 X X/Z CH374 SPI 1 X X X X/Z CH374 0 1 1 X X/Z 0 0 1/X 1 CH374 0 0 1/X 0 0 1 0 0 0 1 0 1 CH374 A0 A0
CH374
1 8 CH374
6.3. SPI
SPI SPI SCS# SCK SDI SDO SPI CH374 DSPMCU SPI CH374 SCS# SPI SCK SPI SCK SDI SPI SDO MOSI SDO SPI SDI MISO SPI SPI CPOL=CPHA=0 CPOL=CPHA=1 MSB first CH374 SPI I/O SPI CH374 SDO CH374 SDO SDI I/O CH374 SDO SDI CH374 SPI SPI 0 SPI 3CH374 SPI SCK SCK 8 SPI CH374 SPI SPI C0H 80H CH374 1CH374 SPI CH374 1 CH374 SPI CH374 SPI SPI SPI 12H 34H 56H 78H
6.4.
CH374 CH374 ACT# USB BIT_SETP_LED_ACT ACT# USB USB SOF USB USB USB CH374 ACT# LED CH374 UD+ UD- USB USB USB
CH374
USB USB ESD 5 CH374 UEN USB UD+ UD- UEN CH374T BIT_CTRL_OE_POLAR 1 CH374S UEN USB UEN 2K USB USB USB UEN CH374 CH374 RSTI RSTI CH374 RSTI CH374 25mS RSTI VCC 0.1uF RST RST# CH374 RST RST# CH374 RST RST#RST RST# CH374 CH374 24MHz CH374 XI XO 24MHz XI XO 24MHz XI XO CH374 SLP BIT_CTRL_OSCIL_OFF 1 CH374 SLP CH374 CKO 3MHz 24MHz CH374 CH374 5V 3.3V 2032XXXXX 5V 5V CH374 VCC 5V V3 4700pF 0.02uF 3.3V CH374 V3 VCC 3.3V CH374 3.3V BIT_CTRL_USB_POWER 1 40uA 15uA 63%
6.5.
CH374 CH375 CH374 USB USB USB SIE USB NRZI CRC USB CH374 7 0 8 1 8 81H 01H 2 64 82H 02H 64 2 2 2 128 CH374 012 USB USB USB CH374 USB Low-Speed Full-Speed USB-HUB USB USB 015 31 USB 064 0128
CH374
7
7.1.
TA TS VCC VIO VCC=5V VCC=V3=3.3V VCC=V3=3.0V VCC GND -40 -40 -55 -0.5 -0.5 85 70 125 6.0 VCC+0.5 V V
7.2. TA=25VCC=5V USB
3.3V 40 V3 VCC 4.5 5 5.3 VCC V V3 VCC 3.0 3.3 3.6 VCC=5V 5 30 ICC mA VCC=3.3V 2 15 VCC=5V 0.035 0.15 ISLP mA I/O / VCC=3.3V 0.015 0.07 VIL -0.5 0.7 V VIH 2.0 VCC+0.5 V VOL 4mA 0.5 V VOH 4mA VCC-0.5 V IUINT INT# 24 240 360 uA IUACT ACT# 53 530 800 uA IUP 3 150 250 uA IDUEN UEN -30 -60 -120 uA IDRI RSTI -70 -140 -210 uA VR 2.4 2.7 3.0 V 5V 7uA3.3V 3uA
7.3. TA=25VCC=5V VCC=3.3V
FCLK TPR TRI TRD TRO TDGC TDGR TWAK TINT USB XI RST RST# INT# 23.99 15 100 15 60 950 60 3 8 24.00 25 17 24.01 40 20 150 1170 140 15 16 MHz mS nS mS mS mS mS mS mS
64 5
7.4. TA=25VCC=5V VCC=3.3V
CH374
RD RD# CS#WR#=1&RD#=CS#=0 WR WR# CS#WR#=CS#=0 TWW TRW TWS TAS TAH TIS TIH TON TOF WR RD RD WR RD WR WR WR RD RD 30 30 120 4 (45) (45) (140) (6) 3 1 4 (6) 18 (25) 25 (40) 18 (25) nS nS nS nS nS nS nS nS nS
7.5. SPI TA=25VCC=5V VCC=3.3V
TSS TSH TNS TNH TN TCH TCL TDS TDH TOE TOX TOZ SCK SCS# SCK SCS# SCK SCS# SCK SCS# SCS#SPI SCK SCK SCK SDI SCK SDI SCK SDO SCK SDO SCS# SDO 20 (30) 20 (30) 20 (30) 20 (30) 80 (120) 14 (18) 18 (24) 4 (6) 3 2 nS nS nS nS nS nS nS nS nS nS nS nS
12 (18) 8 (12)
18 (25) 12 (18) 18 (25)
CH374
8
8.1.
CH374 CH374 VCC 5V C3 CH374 C3 4700pF 0.02F C4 C4 0.1F X1 C1 C2 CH374 USB-HOST X1 24MHz0.4X1 12MHzC1 C2 22pF C5 CH374 C5 I/O CH374 PCB C3 C4 CH374 D+ D- XI XO R2 C7 USB-HOST USB R2 UEN 2K USB USB USB L1 R1 CH374 RST# RST CKO SLP INT# CH374 D0-D7A0-RD-WR-CS -INT DSPMCUCPU
8.2. SPI
CH374 RD# WR# CS# CH374 SPI SPI CH374 /DSP/MCU 5 SCS#SCK SDI SDO INT# INT# CH374 SDO 330 R4 SDI SDI SDO SDO SPI CH374 SPI I/O USB USB
CH374
8.3. 3.3V
CH374 VCC 3.3V 3V V3 VCC 3.3V USB USB USB P3 5V
8.4. HUB 3
CH374U Root-HUB USB-Host 3 USB USB P5 P6 Host USB P4 Host USB Device Host

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