Section 19 Multimedia Card Interface (MCIF)
Rev. 3.00 Jan 25, 2006 page 638 of 872
REJ09B0286-0300
19.3.7
Response Registers 0 to 16, and D (RSPR0 to RSPR16, and RSPRD)
The RSPR registers are eighteen 8-bit registers. RSPR0 to RSPR16 are command response
registers. RSPRD is a data response register that is used in only SPI mode.
The number of command response bytes differs according to the command. The number of
command response bytes can be specified by RSPTYR in the MCIF. The command response is
shifted-in from bit 0 in RSPR16, and shifted to the number of command response bytes ×
8 bits.
Table 19.4 summarizes the correspondence between the number of command response bytes and
valid RSPR register.
The data response is shifted-in from bit 0 in RSPRD, and shifted 8 bits only when a command
includes write data in SPI mode. For other commands, the data response is not shifted. RSPRD is
cleared to H'00 by writing an arbitrary value*
1
.
The initial value of the RSPR registers is H'00. RSPR0 to RSPR16 are simple shift registers. A
command response that has been shifted in is not automatically cleared, and is continuously
shifted until it is shifted out from bit 7 in RSPR0. To clear unnecessary bytes to H'00, write
arbitrary values to each RSPR*
2
.
Notes: 1. Bits 7 to 5 in RSPRD are fixed at 0.
2. Reading the data response from RSPR should be executed after one transfer clock
cycle following the DRPI interrupt occurrence. Clearing of RSPR is completed after
two transfer clock cycles following the write of arbitrary values.
Summary of Contents for H8S/2158
Page 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Page 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Page 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
Page 54: ...Rev 3 00 Jan 25 2006 page lii of lii...
Page 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Page 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Page 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Page 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Page 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Page 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Page 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Page 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Page 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Page 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Page 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Page 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Page 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Page 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Page 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...