CY8C21634, CY8C21534
CY8C21434, CY8C21334, CY8C21234
Document Number: 38-12025 Rev. *O Page 15 of 45
Register Reference
This chapter lists the registers of the CY8C21x34 PSoC device. For detailed register information, refer the PSoC Programmable
System-on-Chip Technical Reference Manual.
Register Conventions
The register conventions specific to this section are listed in Tabl e 8.
Register Mapping Tables
The PSoC device has a total register address space of 512 bytes. The register space is referred to as IO space and is divided into
two banks. The XOI bit in the Flag register (CPU_F) determines which bank the user is currently in. When the XOI bit is set the user
is in Bank 1.
Note In the following register mapping tables, blank fields are Reserved and must not be accessed.
Table 8. Register Conventions
Convention Description
R Read register or bit(s)
W Write register or bit(s)
L Logical register or bit(s)
C Clearable register or bit(s)
# Access is bit specific
Table 9. Register Map 0 Table: User Space
Name
Addr
(0,Hex)
Access
Name
Addr
(0,Hex)
Access
Name
Addr
(0,Hex)
Access
Name
Addr
(0,Hex)
Access
PRT0DR 00 RW 40 ASE10CR0 80 RW C0
PRT0IE 01 RW 41 81 C1
PRT0GS 02 RW 42 82 C2
PRT0DM2 03 RW 43 83 C3
PRT1DR 04 RW 44 ASE11CR0 84 RW C4
PRT1IE 05 RW 45 85 C5
PRT1GS 06 RW 46 86 C6
PRT1DM2 07 RW 47 87 C7
PRT2DR 08 RW 48 88 C8
PRT2IE 09 RW 49 89 C9
PRT2GS 0A RW 4A 8A CA
PRT2DM2 0B RW 4B 8B CB
PRT3DR 0C RW 4C 8C CC
PRT3IE 0D RW 4D 8D CD
PRT3GS 0E RW 4E 8E CE
PRT3DM2 0F RW 4F 8F CF
10 50 90 CUR_PP D0 RW
11 51 91 STK_PP D1 RW
12 52 92 D2
13 53 93 IDX_PP D3 RW
14 54 94 MVR_PP D4 RW
15 55 95 MVW_PP D5 RW
16 56 96 I2C_CFG D6 RW
17 57 97 I2C_SCR D7 #
18 58 98 I2C_DR D8 RW
19 59 99 I2C_MSCR D9 #
1A 5A 9A INT_CLR0 DA RW
1B 5B 9B INT_CLR1 DB RW
1C 5C 9C DC
1D 5D 9D INT_CLR3 DD RW
1E 5E 9E INT_MSK3 DE RW
1F 5F 9F DF
Blank fields are Reserved and must not be accessed. # Access is bit specific.
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